25902180 has 120 divisors (see below), whose sum is σ = 82938240. Its totient is φ = 6765120.

The previous prime is 25902139. The next prime is 25902181. The reversal of 25902180 is 8120952.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25902181) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 95445 + ... + 95715.

It is an arithmetic number, because the mean of its divisors is an integer number (691152).

Almost surely, 2^25902180 is an apocalyptic number.

25902180 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 25902180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41469120).

25902180 is an abundant number, since it is smaller than the sum of its proper divisors (57036060).

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

25902180 is a wasteful number, since it uses less digits than its factorization.

25902180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 25902180 is about 5089.4184343597. The cubic root of 25902180 is about 295.8776125394.

The spelling of 25902180 in words is "twenty-five million, nine hundred two thousand, one hundred eighty".