25567425 has 36 divisors (see below), whose sum is σ = 49322364. Its totient is φ = 12585600.

The previous prime is 25567397. The next prime is 25567427. The reversal of 25567425 is 52476552.

It can be written as a sum of positive squares in 6 ways, for example, as 6066369 + 19501056 = 2463^2 + 4416^2 .

It is not a de Polignac number, because 25567425 - 2⁵ = 25567393 is a prime.

It is a super-2 number, since 2×25567425² = 1307386442261250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25567425.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25567427) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1446 + ... + 7295.

Almost surely, 2^25567425 is an apocalyptic number.

25567425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25567425 is a deficient number, since it is larger than the sum of its proper divisors (23754939).

25567425 is a wasteful number, since it uses less digits than its factorization.

25567425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8770 (or 8762 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 25567425 is about 5056.4241317358. The cubic root of 25567425 is about 294.5974592000.

The spelling of 25567425 in words is "twenty-five million, five hundred sixty-seven thousand, four hundred twenty-five".