25487994 has 16 divisors (see below), whose sum is σ = 58258368. Its totient is φ = 7282272.

The previous prime is 25487977. The next prime is 25488031. The reversal of 25487994 is 49978452.

It is a Curzon number.

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, 303387 + ... + 303470.

It is an arithmetic number, because the mean of its divisors is an integer number (3641148).

Almost surely, 2^25487994 is an apocalyptic number.

25487994 is an abundant number, since it is smaller than the sum of its proper divisors (32770374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25487994 is a wasteful number, since it uses less digits than its factorization.

25487994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606869.

The product of its digits is 725760, while the sum is 48.

The square root of 25487994 is about 5048.5635580826. The cubic root of 25487994 is about 294.2920647988.

The spelling of 25487994 in words is "twenty-five million, four hundred eighty-seven thousand, nine hundred ninety-four".