25797920 has 24 divisors (see below), whose sum is σ = 60947964. Its totient is φ = 10319104.

The previous prime is 25797913. The next prime is 25797923. The reversal of 25797920 is 2979752.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22543504 + 3254416 = 4748^2 + 1804^2 .

It is not an unprimeable number, because it can be changed into a prime (25797923) 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, 80459 + ... + 80778.

Almost surely, 2^25797920 is an apocalyptic number.

25797920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25797920 is an abundant number, since it is smaller than the sum of its proper divisors (35150044).

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

25797920 is a wasteful number, since it uses less digits than its factorization.

25797920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161252 (or 161244 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 25797920 is about 5079.1652857532. The cubic root of 25797920 is about 295.4800953913.

The spelling of 25797920 in words is "twenty-five million, seven hundred ninety-seven thousand, nine hundred twenty".