25125287 has 16 divisors (see below), whose sum is σ = 28343040. Its totient is φ = 22259160.

The previous prime is 25125259. The next prime is 25125293. The reversal of 25125287 is 78252152.

It is a happy number.

It is not a de Polignac number, because 25125287 - 2²⁰ = 24076711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25125227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57014 + ... + 57452.

It is an arithmetic number, because the mean of its divisors is an integer number (1771440).

Almost surely, 2^25125287 is an apocalyptic number.

25125287 is a deficient number, since it is larger than the sum of its proper divisors (3217753).

25125287 is an equidigital number, since it uses as much as digits as its factorization.

25125287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 493 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 25125287 is about 5012.5130423770. The cubic root of 25125287 is about 292.8894153381.

The spelling of 25125287 in words is "twenty-five million, one hundred twenty-five thousand, two hundred eighty-seven".