525573640 has 16 divisors (see below), whose sum is σ = 1182540780. Its totient is φ = 210229440.

The previous prime is 525573619. The next prime is 525573701. The reversal of 525573640 is 46375525.

It can be written as a sum of positive squares in 2 ways, for example, as 493106436 + 32467204 = 22206^2 + 5698^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 525573640.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6569631 + ... + 6569710.

Almost surely, 2^525573640 is an apocalyptic number.

It is an amenable number.

525573640 is an abundant number, since it is smaller than the sum of its proper divisors (656967140).

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

525573640 is a wasteful number, since it uses less digits than its factorization.

525573640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13139352 (or 13139348 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 37.

The square root of 525573640 is about 22925.3929083015. The cubic root of 525573640 is about 807.0080342254.

The spelling of 525573640 in words is "five hundred twenty-five million, five hundred seventy-three thousand, six hundred forty".