25163890 has 16 divisors (see below), whose sum is σ = 45370008. Its totient is φ = 10048896.

The previous prime is 25163881. The next prime is 25163917. The reversal of 25163890 is 9836152.

It can be written as a sum of positive squares in 4 ways, for example, as 23843689 + 1320201 = 4883^2 + 1149^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5614 + ... + 9046.

Almost surely, 2^25163890 is an apocalyptic number.

25163890 is a deficient number, since it is larger than the sum of its proper divisors (20206118).

25163890 is a wasteful number, since it uses less digits than its factorization.

25163890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4173.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 25163890 is about 5016.3622277503. The cubic root of 25163890 is about 293.0393389930.

The spelling of 25163890 in words is "twenty-five million, one hundred sixty-three thousand, eight hundred ninety".