25172659 has 2 divisors, whose sum is σ = 25172660. Its totient is φ = 25172658.

The previous prime is 25172627. The next prime is 25172669. The reversal of 25172659 is 95627152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25172659 - 2⁵ = 25172627 is a prime.

It is a super-2 number, since 2×25172659² = 1267325522260562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25172669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12586329 + 12586330.

It is an arithmetic number, because the mean of its divisors is an integer number (12586330).

Almost surely, 2^25172659 is an apocalyptic number.

25172659 is a deficient number, since it is larger than the sum of its proper divisors (1).

25172659 is an equidigital number, since it uses as much as digits as its factorization.

25172659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 25172659 is about 5017.2361913707. The cubic root of 25172659 is about 293.0733740532.

The spelling of 25172659 in words is "twenty-five million, one hundred seventy-two thousand, six hundred fifty-nine".