25464287 has 2 divisors, whose sum is σ = 25464288. Its totient is φ = 25464286.

The previous prime is 25464277. The next prime is 25464319. The reversal of 25464287 is 78246452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25464287 - 2⁸ = 25464031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25464287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25464247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12732143 + 12732144.

It is an arithmetic number, because the mean of its divisors is an integer number (12732144).

Almost surely, 2^25464287 is an apocalyptic number.

25464287 is a deficient number, since it is larger than the sum of its proper divisors (1).

25464287 is an equidigital number, since it uses as much as digits as its factorization.

25464287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 38.

The square root of 25464287 is about 5046.2151163025. The cubic root of 25464287 is about 294.2007937715.

The spelling of 25464287 in words is "twenty-five million, four hundred sixty-four thousand, two hundred eighty-seven".