57640325 has 6 divisors (see below), whose sum is σ = 71474034. Its totient is φ = 46112240.

The previous prime is 57640321. The next prime is 57640333. The reversal of 57640325 is 52304675.

It can be written as a sum of positive squares in 3 ways, for example, as 516961 + 57123364 = 719^2 + 7558^2 .

It is not a de Polignac number, because 57640325 - 2² = 57640321 is a prime.

It is a super-2 number, since 2×57640325² = 6644814132211250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57640291 and 57640300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57640321) 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, 1152782 + ... + 1152831.

It is an arithmetic number, because the mean of its divisors is an integer number (11912339).

Almost surely, 2^57640325 is an apocalyptic number.

It is an amenable number.

57640325 is a deficient number, since it is larger than the sum of its proper divisors (13833709).

57640325 is a wasteful number, since it uses less digits than its factorization.

57640325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305623 (or 2305618 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 57640325 is about 7592.1225622351. The cubic root of 57640325 is about 386.2858563362.

The spelling of 57640325 in words is "fifty-seven million, six hundred forty thousand, three hundred twenty-five".