57425640 has 128 divisors (see below), whose sum is σ = 182476800. Its totient is φ = 14434560.

The previous prime is 57425639. The next prime is 57425651. The reversal of 57425640 is 4652475.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159781 + ... + 160139.

It is an arithmetic number, because the mean of its divisors is an integer number (1425600).

Almost surely, 2^57425640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57425640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91238400).

57425640 is an abundant number, since it is smaller than the sum of its proper divisors (125051160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57425640 is a wasteful number, since it uses less digits than its factorization.

57425640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 57425640 is about 7577.9707046148. The cubic root of 57425640 is about 385.8056777362.

The spelling of 57425640 in words is "fifty-seven million, four hundred twenty-five thousand, six hundred forty".