25402988 has 24 divisors (see below), whose sum is σ = 48157200. Its totient is φ = 11655360.

The previous prime is 25402973. The next prime is 25402997. The reversal of 25402988 is 88920452.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8063 + ... + 10761.

It is an arithmetic number, because the mean of its divisors is an integer number (2006550).

Almost surely, 2^25402988 is an apocalyptic number.

It is an amenable number.

25402988 is a deficient number, since it is larger than the sum of its proper divisors (22754212).

25402988 is a wasteful number, since it uses less digits than its factorization.

25402988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897 (or 2895 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 25402988 is about 5040.1376965317. The cubic root of 25402988 is about 293.9645321028.

The spelling of 25402988 in words is "twenty-five million, four hundred two thousand, nine hundred eighty-eight".