25317072 has 90 divisors (see below), whose sum is σ = 77932946. Its totient is φ = 7666560.

The previous prime is 25317059. The next prime is 25317073. The reversal of 25317072 is 27071352.

It can be written as a sum of positive squares in only one way, i.e., 25160256 + 156816 = 5016^2 + 396^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25317073) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16698 + ... + 18150.

Almost surely, 2^25317072 is an apocalyptic number.

25317072 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 25317072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38966473).

25317072 is an abundant number, since it is smaller than the sum of its proper divisors (52615874).

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

25317072 is a wasteful number, since it uses less digits than its factorization.

25317072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 25317072 is about 5031.6072978721. The cubic root of 25317072 is about 293.6327498258.

The spelling of 25317072 in words is "twenty-five million, three hundred seventeen thousand, seventy-two".