25533872 has 120 divisors (see below), whose sum is σ = 65352960. Its totient is φ = 9434880.

The previous prime is 25533869. The next prime is 25533899. The reversal of 25533872 is 27833552.

Its product of digits (50400) is a multiple of the sum of its prime divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359597 + ... + 359667.

It is an arithmetic number, because the mean of its divisors is an integer number (544608).

Almost surely, 2^25533872 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 25533872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32676480).

25533872 is an abundant number, since it is smaller than the sum of its proper divisors (39819088).

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

25533872 is a wasteful number, since it uses less digits than its factorization.

25533872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 112 counting only the distinct ones).

The product of its digits is 50400, while the sum is 35.

The square root of 25533872 is about 5053.1051839438. The cubic root of 25533872 is about 294.4685327022.

The spelling of 25533872 in words is "twenty-five million, five hundred thirty-three thousand, eight hundred seventy-two".