57121025 has 12 divisors (see below), whose sum is σ = 76278972. Its totient is φ = 42181440.

The previous prime is 57121021. The next prime is 57121079. The reversal of 57121025 is 52012175.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 27889 + 57093136 = 167^2 + 7556^2 .

It is not a de Polignac number, because 57121025 - 2² = 57121021 is a prime.

It is a super-2 number, since 2×57121025² = 6525622994101250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57121021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87554 + ... + 88203.

It is an arithmetic number, because the mean of its divisors is an integer number (6356581).

Almost surely, 2^57121025 is an apocalyptic number.

It is an amenable number.

57121025 is a deficient number, since it is larger than the sum of its proper divisors (19157947).

57121025 is a wasteful number, since it uses less digits than its factorization.

57121025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175780 (or 175775 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 57121025 is about 7557.8452617132. The cubic root of 57121025 is about 385.1222976852.

The spelling of 57121025 in words is "fifty-seven million, one hundred twenty-one thousand, twenty-five".