25097472 has 72 divisors (see below), whose sum is σ = 74238080. Its totient is φ = 8363520.

The previous prime is 25097459. The next prime is 25097477. The reversal of 25097472 is 27479052.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25097477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5097 + ... + 8727.

Almost surely, 2^25097472 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 25097472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37119040).

25097472 is an abundant number, since it is smaller than the sum of its proper divisors (49140608).

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

25097472 is an equidigital number, since it uses as much as digits as its factorization.

25097472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656 (or 3636 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 25097472 is about 5009.7377176854. The cubic root of 25097472 is about 292.7812941557.

The spelling of 25097472 in words is "twenty-five million, ninety-seven thousand, four hundred seventy-two".