25433920 has 28 divisors (see below), whose sum is σ = 60565284. Its totient is φ = 10173440.

The previous prime is 25433879. The next prime is 25433923. The reversal of 25433920 is 2933452.

It can be written as a sum of positive squares in 2 ways, for example, as 10810944 + 14622976 = 3288^2 + 3824^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25433923) 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, 39421 + ... + 40060.

Almost surely, 2^25433920 is an apocalyptic number.

25433920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25433920 is an abundant number, since it is smaller than the sum of its proper divisors (35131364).

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

25433920 is an equidigital number, since it uses as much as digits as its factorization.

25433920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79498 (or 79488 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 25433920 is about 5043.2053299464. The cubic root of 25433920 is about 294.0837992107.

The spelling of 25433920 in words is "twenty-five million, four hundred thirty-three thousand, nine hundred twenty".