25995117 has 4 divisors (see below), whose sum is σ = 34660160. Its totient is φ = 17330076.

The previous prime is 25995071. The next prime is 25995119. The reversal of 25995117 is 71159952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-25995117 is a prime.

It is a super-2 number, since 2×25995117² = 1351492215687378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25995119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4332517 + ... + 4332522.

It is an arithmetic number, because the mean of its divisors is an integer number (8665040).

Almost surely, 2^25995117 is an apocalyptic number.

It is an amenable number.

25995117 is a deficient number, since it is larger than the sum of its proper divisors (8665043).

25995117 is an equidigital number, since it uses as much as digits as its factorization.

25995117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8665042.

The product of its digits is 28350, while the sum is 39.

The square root of 25995117 is about 5098.5406735653. The cubic root of 25995117 is about 296.2310596946.

The spelling of 25995117 in words is "twenty-five million, nine hundred ninety-five thousand, one hundred seventeen".