25264891 has 2 divisors, whose sum is σ = 25264892. Its totient is φ = 25264890.

The previous prime is 25264871. The next prime is 25264903. The reversal of 25264891 is 19846252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25264891 - 2⁵ = 25264859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25264891.

It is not a weakly prime, because it can be changed into another prime (25264801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12632445 + 12632446.

It is an arithmetic number, because the mean of its divisors is an integer number (12632446).

Almost surely, 2^25264891 is an apocalyptic number.

25264891 is a deficient number, since it is larger than the sum of its proper divisors (1).

25264891 is an equidigital number, since it uses as much as digits as its factorization.

25264891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 25264891 is about 5026.4193020479. The cubic root of 25264891 is about 293.4308756471.

The spelling of 25264891 in words is "twenty-five million, two hundred sixty-four thousand, eight hundred ninety-one".