25330931 has 2 divisors, whose sum is σ = 25330932. Its totient is φ = 25330930.

The previous prime is 25330897. The next prime is 25330961. The reversal of 25330931 is 13903352.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25330931 is a prime.

It is a super-2 number, since 2×25330931² = 1283312130653522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25330931.

It is not a weakly prime, because it can be changed into another prime (25330961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12665465 + 12665466.

It is an arithmetic number, because the mean of its divisors is an integer number (12665466).

Almost surely, 2^25330931 is an apocalyptic number.

25330931 is a deficient number, since it is larger than the sum of its proper divisors (1).

25330931 is an equidigital number, since it uses as much as digits as its factorization.

25330931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 25330931 is about 5032.9843035718. The cubic root of 25330931 is about 293.6863199219.

The spelling of 25330931 in words is "twenty-five million, three hundred thirty thousand, nine hundred thirty-one".