57420725 has 12 divisors (see below), whose sum is σ = 73657860. Its totient is φ = 44352000.

The previous prime is 57420689. The next prime is 57420731. The reversal of 57420725 is 52702475.

It can be written as a sum of positive squares in 6 ways, for example, as 252004 + 57168721 = 502^2 + 7561^2 .

It is not a de Polignac number, because 57420725 - 2⁶ = 57420661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57420691 and 57420700.

It is a congruent 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, 38876 + ... + 40325.

It is an arithmetic number, because the mean of its divisors is an integer number (6138155).

Almost surely, 2^57420725 is an apocalyptic number.

It is an amenable number.

57420725 is a deficient number, since it is larger than the sum of its proper divisors (16237135).

57420725 is a wasteful number, since it uses less digits than its factorization.

57420725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79240 (or 79235 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 32.

The square root of 57420725 is about 7577.6464024128. The cubic root of 57420725 is about 385.7946705217.

The spelling of 57420725 in words is "fifty-seven million, four hundred twenty thousand, seven hundred twenty-five".