25807472 has 40 divisors (see below), whose sum is σ = 54936960. Its totient is φ = 11689920.

The previous prime is 25807447. The next prime is 25807489. The reversal of 25807472 is 27470852.

It is a super-2 number, since 2×25807472² = 1332051222061568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5147 + ... + 8837.

It is an arithmetic number, because the mean of its divisors is an integer number (1373424).

Almost surely, 2^25807472 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 25807472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27468480).

25807472 is an abundant number, since it is smaller than the sum of its proper divisors (29129488).

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

25807472 is a wasteful number, since it uses less digits than its factorization.

25807472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3741 (or 3735 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 25807472 is about 5080.1055107153. The cubic root of 25807472 is about 295.5165592819.

The spelling of 25807472 in words is "twenty-five million, eight hundred seven thousand, four hundred seventy-two".