25243472 has 20 divisors (see below), whose sum is σ = 50232276. Its totient is φ = 12280320.

The previous prime is 25243429. The next prime is 25243481. The reversal of 25243472 is 27434252.

It can be written as a sum of positive squares in 2 ways, for example, as 19749136 + 5494336 = 4444^2 + 2344^2 .

It is a super-2 number, since 2×25243472² = 1274465757229568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20729 + ... + 21912.

Almost surely, 2^25243472 is an apocalyptic number.

It is an amenable number.

25243472 is a deficient number, since it is larger than the sum of its proper divisors (24988804).

25243472 is a wasteful number, since it uses less digits than its factorization.

25243472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42686 (or 42680 counting only the distinct ones).

The product of its digits is 13440, while the sum is 29.

The square root of 25243472 is about 5024.2882082938. The cubic root of 25243472 is about 293.3479308622.

The spelling of 25243472 in words is "twenty-five million, two hundred forty-three thousand, four hundred seventy-two".