25136469 has 12 divisors (see below), whose sum is σ = 36993996. Its totient is φ = 16441152.

The previous prime is 25136459. The next prime is 25136473. The reversal of 25136469 is 96463152.

It is a happy number.

25136469 is a `hidden beast` number, since 2 + 5 + 1 + 3 + 646 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22212369 + 2924100 = 4713^2 + 1710^2 .

It is not a de Polignac number, because 25136469 - 2⁵ = 25136437 is a prime.

It is a super-2 number, since 2×25136469² = 1263684147575922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25136459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25872 + ... + 26825.

It is an arithmetic number, because the mean of its divisors is an integer number (3082833).

Almost surely, 2^25136469 is an apocalyptic number.

It is an amenable number.

25136469 is a deficient number, since it is larger than the sum of its proper divisors (11857527).

25136469 is a wasteful number, since it uses less digits than its factorization.

25136469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52756 (or 52753 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 25136469 is about 5013.6283268707. The cubic root of 25136469 is about 292.9328590038.

The spelling of 25136469 in words is "twenty-five million, one hundred thirty-six thousand, four hundred sixty-nine".