25252274999 has 20 divisors (see below), whose sum is σ = 29958711720. Its totient is φ = 21277826640.

The previous prime is 25252274953. The next prime is 25252275001. The reversal of 25252274999 is 99947225252.

It is not a de Polignac number, because 25252274999 - 2¹² = 25252270903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25252274599) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52529 + ... + 230789.

It is an arithmetic number, because the mean of its divisors is an integer number (1497935586).

Almost surely, 2^25252274999 is an apocalyptic number.

25252274999 is a deficient number, since it is larger than the sum of its proper divisors (4706436721).

25252274999 is an frugal number, since it uses more digits than its factorization.

25252274999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178348 (or 178327 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 56.

The spelling of 25252274999 in words is "twenty-five billion, two hundred fifty-two million, two hundred seventy-four thousand, nine hundred ninety-nine".