25136880 has 160 divisors (see below), whose sum is σ = 84691008. Its totient is φ = 6144000.

The previous prime is 25136879. The next prime is 25136887. The reversal of 25136880 is 8863152.

It is a happy number.

It is a super-2 number, since 2×25136880² = 1263725472268800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25136887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248830 + ... + 248930.

Almost surely, 2^25136880 is an apocalyptic number.

25136880 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 25136880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42345504).

25136880 is an abundant number, since it is smaller than the sum of its proper divisors (59554128).

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

25136880 is a wasteful number, since it uses less digits than its factorization.

25136880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 25136880 is about 5013.6693149828. The cubic root of 25136880 is about 292.9344555519.

The spelling of 25136880 in words is "twenty-five million, one hundred thirty-six thousand, eight hundred eighty".