525000000 has 252 divisors, whose sum is σ = 1984373984. Its totient is φ = 120000000.

The previous prime is 524999989. The next prime is 525000031. The reversal of 525000000 is 525.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 525000000.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 1250 × 350 × 1200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 74999997 + ... + 75000003.

Almost surely, 2^525000000 is an apocalyptic number.

525000000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992186992).

525000000 is an abundant number, since it is smaller than the sum of its proper divisors (1459373984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525000000 is an frugal number, since it uses more digits than its factorization.

525000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 12.

The square root of 525000000 is about 22912.8784747792. The cubic root of 525000000 is about 806.7143230123.

Adding to 525000000 its reverse (525), we get a palindrome (525000525).

Multiplying 525000000 by its reverse (525), we get a square (275625000000 = 525000²).

525000000 divided by its reverse (525) gives a 6-th power (1000000 = 10⁶).

It can be divided in two parts, 5 and 25000000, that multiplied together give a cube (125000000 = 500³).

The spelling of 525000000 in words is "five hundred twenty-five million", and thus it is an aban number.