25957571 has 6 divisors (see below), whose sum is σ = 26822916. Its totient is φ = 25119300.

The previous prime is 25957567. The next prime is 25957577. The reversal of 25957571 is 17575952.

It is not a de Polignac number, because 25957571 - 2² = 25957567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25957577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12545 + ... + 14466.

It is an arithmetic number, because the mean of its divisors is an integer number (4470486).

Almost surely, 2^25957571 is an apocalyptic number.

25957571 is a deficient number, since it is larger than the sum of its proper divisors (865345).

25957571 is an equidigital number, since it uses as much as digits as its factorization.

25957571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27073 (or 27042 counting only the distinct ones).

The product of its digits is 110250, while the sum is 41.

The square root of 25957571 is about 5094.8573090912. The cubic root of 25957571 is about 296.0883707107.

The spelling of 25957571 in words is "twenty-five million, nine hundred fifty-seven thousand, five hundred seventy-one".