25455425 has 6 divisors (see below), whose sum is σ = 31564758. Its totient is φ = 20364320.

The previous prime is 25455403. The next prime is 25455427. The reversal of 25455425 is 52455452.

It can be written as a sum of positive squares in 3 ways, for example, as 6801664 + 18653761 = 2608^2 + 4319^2 .

It is not a de Polignac number, because 25455425 - 2⁸ = 25455169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25455391 and 25455400.

It is not an unprimeable number, because it can be changed into a prime (25455427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 509084 + ... + 509133.

It is an arithmetic number, because the mean of its divisors is an integer number (5260793).

Almost surely, 2^25455425 is an apocalyptic number.

25455425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25455425 is a deficient number, since it is larger than the sum of its proper divisors (6109333).

25455425 is a wasteful number, since it uses less digits than its factorization.

25455425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018227 (or 1018222 counting only the distinct ones).

The product of its digits is 40000, while the sum is 32.

The square root of 25455425 is about 5045.3369560417. The cubic root of 25455425 is about 294.1666608708.

The spelling of 25455425 in words is "twenty-five million, four hundred fifty-five thousand, four hundred twenty-five".