25242844355 has 4 divisors (see below), whose sum is σ = 30291413232. Its totient is φ = 20194275480.

The previous prime is 25242844337. The next prime is 25242844391. The reversal of 25242844355 is 55344824252.

It is a happy number.

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

It is not a de Polignac number, because 25242844355 - 2²⁶ = 25175735491 is a prime.

It is a super-2 number, since 2×25242844355² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2524284431 + ... + 2524284440.

It is an arithmetic number, because the mean of its divisors is an integer number (7572853308).

Almost surely, 2^25242844355 is an apocalyptic number.

25242844355 is a deficient number, since it is larger than the sum of its proper divisors (5048568877).

25242844355 is an equidigital number, since it uses as much as digits as its factorization.

25242844355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5048568876.

The product of its digits is 1536000, while the sum is 44.

The spelling of 25242844355 in words is "twenty-five billion, two hundred forty-two million, eight hundred forty-four thousand, three hundred fifty-five".