57640525 has 6 divisors (see below), whose sum is σ = 71474282. Its totient is φ = 46112400.

The previous prime is 57640519. The next prime is 57640529. The reversal of 57640525 is 52504675.

It can be written as a sum of positive squares in 3 ways, for example, as 15468489 + 42172036 = 3933^2 + 6494^2 .

It is not a de Polignac number, because 57640525 - 2⁵ = 57640493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57640529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1152786 + ... + 1152835.

Almost surely, 2^57640525 is an apocalyptic number.

It is an amenable number.

57640525 is a deficient number, since it is larger than the sum of its proper divisors (13833757).

57640525 is a wasteful number, since it uses less digits than its factorization.

57640525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305631 (or 2305626 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 57640525 is about 7592.1357337708. The cubic root of 57640525 is about 386.2863031130.

The spelling of 57640525 in words is "fifty-seven million, six hundred forty thousand, five hundred twenty-five".