25252542115 has 4 divisors (see below), whose sum is σ = 30303050544. Its totient is φ = 20202033688.

The previous prime is 25252542113. The next prime is 25252542131. The reversal of 25252542115 is 51124525252.

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

It is a cyclic number.

It is not a de Polignac number, because 25252542115 - 2¹ = 25252542113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25252542113) 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, 2525254207 + ... + 2525254216.

It is an arithmetic number, because the mean of its divisors is an integer number (7575762636).

Almost surely, 2^25252542115 is an apocalyptic number.

25252542115 is a deficient number, since it is larger than the sum of its proper divisors (5050508429).

25252542115 is an equidigital number, since it uses as much as digits as its factorization.

25252542115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050508428.

The product of its digits is 40000, while the sum is 34.

The spelling of 25252542115 in words is "twenty-five billion, two hundred fifty-two million, five hundred forty-two thousand, one hundred fifteen".