25981392 has 40 divisors (see below), whose sum is σ = 67304224. Its totient is φ = 8636544.

The previous prime is 25981391. The next prime is 25981393. The reversal of 25981392 is 29318952.

It is an interprime number because it is at equal distance from previous prime (25981391) and next prime (25981393).

It is a self number, because there is not a number n which added to its sum of digits gives 25981392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25981391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28983 + ... + 29865.

Almost surely, 2^25981392 is an apocalyptic number.

It is an amenable number.

25981392 is an abundant number, since it is smaller than the sum of its proper divisors (41322832).

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

25981392 is a wasteful number, since it uses less digits than its factorization.

25981392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507 (or 1501 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 25981392 is about 5097.1945224800. The cubic root of 25981392 is about 296.1789154520.

The spelling of 25981392 in words is "twenty-five million, nine hundred eighty-one thousand, three hundred ninety-two".