25105872 has 80 divisors (see below), whose sum is σ = 74941632. Its totient is φ = 7157760.

The previous prime is 25105837. The next prime is 25105901. The reversal of 25105872 is 27850152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7578 + ... + 10374.

Almost surely, 2^25105872 is an apocalyptic number.

25105872 is a gapful number since it is divisible by the number (22) 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 25105872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37470816).

25105872 is an abundant number, since it is smaller than the sum of its proper divisors (49835760).

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

25105872 is a wasteful number, since it uses less digits than its factorization.

25105872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836 (or 2830 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 25105872 is about 5010.5760147911. The cubic root of 25105872 is about 292.8139546635.

The spelling of 25105872 in words is "twenty-five million, one hundred five thousand, eight hundred seventy-two".