25136465 has 4 divisors (see below), whose sum is σ = 30163764. Its totient is φ = 20109168.

The previous prime is 25136459. The next prime is 25136473. The reversal of 25136465 is 56463152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19864849 + 5271616 = 4457^2 + 2296^2 .

It is a cyclic number.

It is not a de Polignac number, because 25136465 - 2¹⁰ = 25135441 is a prime.

It is a Duffinian 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, 2513642 + ... + 2513651.

It is an arithmetic number, because the mean of its divisors is an integer number (7540941).

Almost surely, 2^25136465 is an apocalyptic number.

It is an amenable number.

25136465 is a deficient number, since it is larger than the sum of its proper divisors (5027299).

25136465 is an equidigital number, since it uses as much as digits as its factorization.

25136465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027298.

The product of its digits is 21600, while the sum is 32.

The square root of 25136465 is about 5013.6279279580. The cubic root of 25136465 is about 292.9328434655.

The spelling of 25136465 in words is "twenty-five million, one hundred thirty-six thousand, four hundred sixty-five".