25925988 has 48 divisors (see below), whose sum is σ = 66394944. Its totient is φ = 7808640.

The previous prime is 25925959. The next prime is 25925989. The reversal of 25925988 is 88952952.

It is a super-2 number, since 2×25925988² = 1344313707552288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25925989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25506 + ... + 26502.

It is an arithmetic number, because the mean of its divisors is an integer number (1383228).

Almost surely, 2^25925988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25925988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33197472).

25925988 is an abundant number, since it is smaller than the sum of its proper divisors (40468956).

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

25925988 is a wasteful number, since it uses less digits than its factorization.

25925988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 1210 counting only the distinct ones).

The product of its digits is 518400, while the sum is 48.

The square root of 25925988 is about 5091.7568677226. The cubic root of 25925988 is about 295.9682367913.

The spelling of 25925988 in words is "twenty-five million, nine hundred twenty-five thousand, nine hundred eighty-eight".