25145920 has 56 divisors (see below), whose sum is σ = 60350400. Its totient is φ = 9979392.

The previous prime is 25145917. The next prime is 25145947. The reversal of 25145920 is 2954152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57061 + ... + 57499.

Almost surely, 2^25145920 is an apocalyptic number.

25145920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25145920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30175200).

25145920 is an abundant number, since it is smaller than the sum of its proper divisors (35204480).

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

25145920 is a wasteful number, since it uses less digits than its factorization.

25145920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 25145920 is about 5014.5707692683. The cubic root of 25145920 is about 292.9695674419.

The spelling of 25145920 in words is "twenty-five million, one hundred forty-five thousand, nine hundred twenty".