25288887 has 8 divisors (see below), whose sum is σ = 36312304. Its totient is φ = 15562368.

The previous prime is 25288883. The next prime is 25288909. The reversal of 25288887 is 78888252.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25288887 - 2² = 25288883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25288883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324178 + ... + 324255.

It is an arithmetic number, because the mean of its divisors is an integer number (4539038).

Almost surely, 2^25288887 is an apocalyptic number.

25288887 is a deficient number, since it is larger than the sum of its proper divisors (11023417).

25288887 is a wasteful number, since it uses less digits than its factorization.

25288887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648449.

The product of its digits is 573440, while the sum is 48.

The square root of 25288887 is about 5028.8057230321. The cubic root of 25288887 is about 293.5237441696.

The spelling of 25288887 in words is "twenty-five million, two hundred eighty-eight thousand, eight hundred eighty-seven".