25487966 has 16 divisors (see below), whose sum is σ = 43924704. Its totient is φ = 10865664.

The previous prime is 25487953. The next prime is 25487971. The reversal of 25487966 is 66978452.

It is a self number, because there is not a number n which added to its sum of digits gives 25487966.

It is a congruent 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, 2015 + ... + 7418.

It is an arithmetic number, because the mean of its divisors is an integer number (2745294).

Almost surely, 2^25487966 is an apocalyptic number.

25487966 is a deficient number, since it is larger than the sum of its proper divisors (18436738).

25487966 is a wasteful number, since it uses less digits than its factorization.

25487966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9635.

The product of its digits is 725760, while the sum is 47.

The square root of 25487966 is about 5048.5607850159. The cubic root of 25487966 is about 294.2919570333.

The spelling of 25487966 in words is "twenty-five million, four hundred eighty-seven thousand, nine hundred sixty-six".