25542156 has 48 divisors (see below), whose sum is σ = 64915200. Its totient is φ = 7785792.

The previous prime is 25542107. The next prime is 25542157. The reversal of 25542156 is 65124552.

It is not an unprimeable number, because it can be changed into a prime (25542157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4681 + ... + 8543.

It is an arithmetic number, because the mean of its divisors is an integer number (1352400).

Almost surely, 2^25542156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25542156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32457600).

25542156 is an abundant number, since it is smaller than the sum of its proper divisors (39373044).

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

25542156 is a wasteful number, since it uses less digits than its factorization.

25542156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3918 (or 3916 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 25542156 is about 5053.9248114708. The cubic root of 25542156 is about 294.5003742442.

The spelling of 25542156 in words is "twenty-five million, five hundred forty-two thousand, one hundred fifty-six".