25171057 has 8 divisors (see below), whose sum is σ = 25604000. Its totient is φ = 24740640.

The previous prime is 25171049. The next prime is 25171099. The reversal of 25171057 is 75017152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25171057 - 2³ = 25171049 is a prime.

It is a super-2 number, since 2×25171057² = 1267164220994498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25171357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36082 + ... + 36772.

It is an arithmetic number, because the mean of its divisors is an integer number (3200500).

Almost surely, 2^25171057 is an apocalyptic number.

It is an amenable number.

25171057 is a deficient number, since it is larger than the sum of its proper divisors (432943).

25171057 is an equidigital number, since it uses as much as digits as its factorization.

25171057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 25171057 is about 5017.0765391810. The cubic root of 25171057 is about 293.0671568117.

The spelling of 25171057 in words is "twenty-five million, one hundred seventy-one thousand, fifty-seven".