25232989 has 2 divisors, whose sum is σ = 25232990. Its totient is φ = 25232988.

The previous prime is 25232971. The next prime is 25232993. The reversal of 25232989 is 98923252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19873764 + 5359225 = 4458^2 + 2315^2 .

It is a cyclic number.

It is not a de Polignac number, because 25232989 - 2⁷ = 25232861 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25232939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12616494 + 12616495.

It is an arithmetic number, because the mean of its divisors is an integer number (12616495).

Almost surely, 2^25232989 is an apocalyptic number.

It is an amenable number.

25232989 is a deficient number, since it is larger than the sum of its proper divisors (1).

25232989 is an equidigital number, since it uses as much as digits as its factorization.

25232989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 40.

The square root of 25232989 is about 5023.2448676130. The cubic root of 25232989 is about 293.3073184860.

The spelling of 25232989 in words is "twenty-five million, two hundred thirty-two thousand, nine hundred eighty-nine".