25137882 has 72 divisors (see below), whose sum is σ = 69144192. Its totient is φ = 6526800.

The previous prime is 25137881. The next prime is 25137887. The reversal of 25137882 is 28873152.

It is a super-2 number, since 2×25137882² = 1263826222891848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25137881) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8407 + ... + 10997.

It is an arithmetic number, because the mean of its divisors is an integer number (960336).

Almost surely, 2^25137882 is an apocalyptic number.

25137882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25137882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34572096).

25137882 is an abundant number, since it is smaller than the sum of its proper divisors (44006310).

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

25137882 is a wasteful number, since it uses less digits than its factorization.

25137882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624 (or 2614 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 25137882 is about 5013.7692408008. The cubic root of 25137882 is about 292.9383477935.

The spelling of 25137882 in words is "twenty-five million, one hundred thirty-seven thousand, eight hundred eighty-two".