25183920 has 40 divisors (see below), whose sum is σ = 78070896. Its totient is φ = 6715648.

The previous prime is 25183903. The next prime is 25183927. The reversal of 25183920 is 2938152.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (25183927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52227 + ... + 52706.

Almost surely, 2^25183920 is an apocalyptic number.

25183920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25183920 is an abundant number, since it is smaller than the sum of its proper divisors (52886976).

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

25183920 is a wasteful number, since it uses less digits than its factorization.

25183920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104949 (or 104943 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 25183920 is about 5018.3582972921. The cubic root of 25183920 is about 293.1170697054.

The spelling of 25183920 in words is "twenty-five million, one hundred eighty-three thousand, nine hundred twenty".