25425265 has 8 divisors (see below), whose sum is σ = 30561768. Its totient is φ = 20305920.

The previous prime is 25425223. The next prime is 25425269. The reversal of 25425265 is 56252452.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4704561 + 20720704 = 2169^2 + 4552^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25425265 - 2⁷ = 25425137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25425269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 762 + ... + 7171.

It is an arithmetic number, because the mean of its divisors is an integer number (3820221).

Almost surely, 2^25425265 is an apocalyptic number.

It is an amenable number.

25425265 is a deficient number, since it is larger than the sum of its proper divisors (5136503).

25425265 is an equidigital number, since it uses as much as digits as its factorization.

25425265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8579.

The product of its digits is 24000, while the sum is 31.

The square root of 25425265 is about 5042.3471717049. The cubic root of 25425265 is about 294.0504371487.

The spelling of 25425265 in words is "twenty-five million, four hundred twenty-five thousand, two hundred sixty-five".