25972571 has 2 divisors, whose sum is σ = 25972572. Its totient is φ = 25972570.

The previous prime is 25972561. The next prime is 25972607. The reversal of 25972571 is 17527952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25972571 - 2¹⁴ = 25956187 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25972561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12986285 + 12986286.

It is an arithmetic number, because the mean of its divisors is an integer number (12986286).

Almost surely, 2^25972571 is an apocalyptic number.

25972571 is a deficient number, since it is larger than the sum of its proper divisors (1).

25972571 is an equidigital number, since it uses as much as digits as its factorization.

25972571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44100, while the sum is 38.

The square root of 25972571 is about 5096.3291691177. The cubic root of 25972571 is about 296.1453928712.

The spelling of 25972571 in words is "twenty-five million, nine hundred seventy-two thousand, five hundred seventy-one".