25920388 has 12 divisors (see below), whose sum is σ = 48850060. Its totient is φ = 11963232.

The previous prime is 25920383. The next prime is 25920397. The reversal of 25920388 is 88302952.

It can be written as a sum of positive squares in 2 ways, for example, as 16630084 + 9290304 = 4078^2 + 3048^2 .

It is not an unprimeable number, because it can be changed into a prime (25920383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249183 + ... + 249286.

Almost surely, 2^25920388 is an apocalyptic number.

It is an amenable number.

25920388 is a deficient number, since it is larger than the sum of its proper divisors (22929672).

25920388 is a wasteful number, since it uses less digits than its factorization.

25920388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498486 (or 498484 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 25920388 is about 5091.2069295993. The cubic root of 25920388 is about 295.9469255948.

The spelling of 25920388 in words is "twenty-five million, nine hundred twenty thousand, three hundred eighty-eight".