25232161 has 2 divisors, whose sum is σ = 25232162. Its totient is φ = 25232160.

The previous prime is 25232153. The next prime is 25232177. The reversal of 25232161 is 16123252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14630625 + 10601536 = 3825^2 + 3256^2 .

It is a cyclic number.

It is not a de Polignac number, because 25232161 - 2³ = 25232153 is a prime.

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

It is not a weakly prime, because it can be changed into another prime (25232191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12616080 + 12616081.

It is an arithmetic number, because the mean of its divisors is an integer number (12616081).

Almost surely, 2^25232161 is an apocalyptic number.

It is an amenable number.

25232161 is a deficient number, since it is larger than the sum of its proper divisors (1).

25232161 is an equidigital number, since it uses as much as digits as its factorization.

25232161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 25232161 is about 5023.1624500906. The cubic root of 25232161 is about 293.3041102373.

The spelling of 25232161 in words is "twenty-five million, two hundred thirty-two thousand, one hundred sixty-one".