525649402 has 16 divisors (see below), whose sum is σ = 838535040. Its totient is φ = 246423168.

The previous prime is 525649309. The next prime is 525649427. The reversal of 525649402 is 204946525.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67618 + ... + 74989.

It is an arithmetic number, because the mean of its divisors is an integer number (52408440).

Almost surely, 2^525649402 is an apocalyptic number.

525649402 is a deficient number, since it is larger than the sum of its proper divisors (312885638).

525649402 is a wasteful number, since it uses less digits than its factorization.

525649402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142725.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 525649402 is about 22927.0452086613. The cubic root of 525649402 is about 807.0468093848.

The spelling of 525649402 in words is "five hundred twenty-five million, six hundred forty-nine thousand, four hundred two".