525540644 has 12 divisors (see below), whose sum is σ = 949363968. Its totient is φ = 254293800.

The previous prime is 525540629. The next prime is 525540649. The reversal of 525540644 is 446045525.

It is not an unprimeable number, because it can be changed into a prime (525540649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118992 + ... + 2119239.

It is an arithmetic number, because the mean of its divisors is an integer number (79113664).

Almost surely, 2^525540644 is an apocalyptic number.

It is an amenable number.

525540644 is a deficient number, since it is larger than the sum of its proper divisors (423823324).

525540644 is a wasteful number, since it uses less digits than its factorization.

525540644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238266 (or 4238264 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The square root of 525540644 is about 22924.6732583040. The cubic root of 525540644 is about 806.9911456346.

The spelling of 525540644 in words is "five hundred twenty-five million, five hundred forty thousand, six hundred forty-four".