25412502117 has 4 divisors (see below), whose sum is σ = 33883336160. Its totient is φ = 16941668076.

The previous prime is 25412502107. The next prime is 25412502151. The reversal of 25412502117 is 71120521452.

It is a happy number.

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 not a de Polignac number, because 25412502117 - 2²⁰ = 25411453541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25412502107) 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, 4235417017 + ... + 4235417022.

It is an arithmetic number, because the mean of its divisors is an integer number (8470834040).

Almost surely, 2^25412502117 is an apocalyptic number.

It is an amenable number.

25412502117 is a deficient number, since it is larger than the sum of its proper divisors (8470834043).

25412502117 is an equidigital number, since it uses as much as digits as its factorization.

25412502117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8470834042.

The product of its (nonzero) digits is 5600, while the sum is 30.

The spelling of 25412502117 in words is "twenty-five billion, four hundred twelve million, five hundred two thousand, one hundred seventeen".