525450240 has 440 divisors, whose sum is σ = 2163793632. Its totient is φ = 119439360.

The previous prime is 525450221. The next prime is 525450257. The reversal of 525450240 is 42054525.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2902950 + ... + 2903130.

Almost surely, 2^525450240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525450240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1081896816).

525450240 is an abundant number, since it is smaller than the sum of its proper divisors (1638343392).

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

525450240 is a wasteful number, since it uses less digits than its factorization.

525450240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 525450240 is about 22922.7014114829. The cubic root of 525450240 is about 806.9448698536.

The spelling of 525450240 in words is "five hundred twenty-five million, four hundred fifty thousand, two hundred forty".