57321025 has 12 divisors (see below), whose sum is σ = 75259692. Its totient is φ = 43159040.

The previous prime is 57321013. The next prime is 57321041. The reversal of 57321025 is 52012375.

It can be written as a sum of positive squares in 6 ways, for example, as 106929 + 57214096 = 327^2 + 7564^2 .

It is not a de Polignac number, because 57321025 - 2⁹ = 57320513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67012 + ... + 67861.

It is an arithmetic number, because the mean of its divisors is an integer number (6271641).

Almost surely, 2^57321025 is an apocalyptic number.

It is an amenable number.

57321025 is a deficient number, since it is larger than the sum of its proper divisors (17938667).

57321025 is a wasteful number, since it uses less digits than its factorization.

57321025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134900 (or 134895 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 57321025 is about 7571.0649845316. The cubic root of 57321025 is about 385.5712551854.

The spelling of 57321025 in words is "fifty-seven million, three hundred twenty-one thousand, twenty-five".