25985144 has 32 divisors (see below), whose sum is σ = 50274000. Its totient is φ = 12583680.

The previous prime is 25985111. The next prime is 25985159. The reversal of 25985144 is 44158952.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25985098 and 25985107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74282 + ... + 74630.

Almost surely, 2^25985144 is an apocalyptic number.

It is an amenable number.

25985144 is a deficient number, since it is larger than the sum of its proper divisors (24288856).

25985144 is a wasteful number, since it uses less digits than its factorization.

25985144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 619 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 25985144 is about 5097.5625547903. The cubic root of 25985144 is about 296.1931719348.

The spelling of 25985144 in words is "twenty-five million, nine hundred eighty-five thousand, one hundred forty-four".