525000440 has 32 divisors (see below), whose sum is σ = 1189885680. Its totient is φ = 208465152.

The previous prime is 525000439. The next prime is 525000479. The reversal of 525000440 is 44000525.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42422 + ... + 53381.

Almost surely, 2^525000440 is an apocalyptic number.

It is an amenable number.

525000440 is an abundant number, since it is smaller than the sum of its proper divisors (664885240).

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

525000440 is a wasteful number, since it uses less digits than its factorization.

525000440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95951 (or 95947 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 525000440 is about 22912.8880763644. Note that the first 3 decimals coincide. The cubic root of 525000440 is about 806.7145483800.

Adding to 525000440 its reverse (44000525), we get a palindrome (569000965).

The spelling of 525000440 in words is "five hundred twenty-five million, four hundred forty", and thus it is an aban number.