25512261 has 8 divisors (see below), whose sum is σ = 34367424. Its totient is φ = 16832640.

The previous prime is 25512251. The next prime is 25512281. The reversal of 25512261 is 16221552.

It is a happy number.

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

It is not a de Polignac number, because 25512261 - 2⁶ = 25512197 is a prime.

It is a super-2 number, since 2×25512261² = 1301750922664242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25512241) 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, 43545 + ... + 44126.

It is an arithmetic number, because the mean of its divisors is an integer number (4295928).

Almost surely, 2^25512261 is an apocalyptic number.

It is an amenable number.

25512261 is a deficient number, since it is larger than the sum of its proper divisors (8855163).

25512261 is an equidigital number, since it uses as much as digits as its factorization.

25512261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87771.

The product of its digits is 1200, while the sum is 24.

The square root of 25512261 is about 5050.9663431862. The cubic root of 25512261 is about 294.3854332065.

The spelling of 25512261 in words is "twenty-five million, five hundred twelve thousand, two hundred sixty-one".