57778625 has 16 divisors (see below), whose sum is σ = 73032960. Its totient is φ = 45630000.

The previous prime is 57778619. The next prime is 57778649. The reversal of 57778625 is 52687775.

It is a happy number.

It is not a de Polignac number, because 57778625 - 2²⁰ = 56730049 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 57778625.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6950 + ... + 12800.

It is an arithmetic number, because the mean of its divisors is an integer number (4564560).

Almost surely, 2^57778625 is an apocalyptic number.

It is an amenable number.

57778625 is a deficient number, since it is larger than the sum of its proper divisors (15254335).

57778625 is an equidigital number, since it uses as much as digits as its factorization.

57778625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5945 (or 5935 counting only the distinct ones).

The product of its digits is 823200, while the sum is 47.

The square root of 57778625 is about 7601.2252301849. The cubic root of 57778625 is about 386.5945560963.

The spelling of 57778625 in words is "fifty-seven million, seven hundred seventy-eight thousand, six hundred twenty-five".