22781002025 has 12 divisors (see below), whose sum is σ = 28325425152. Its totient is φ = 18175135440.

The previous prime is 22781002007. The next prime is 22781002043. The reversal of 22781002025 is 52020018722.

It is an interprime number because it is at equal distance from previous prime (22781002007) and next prime (22781002043).

It is not a de Polignac number, because 22781002025 - 2²² = 22776807721 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1232297 + ... + 1250646.

It is an arithmetic number, because the mean of its divisors is an integer number (2360452096).

Almost surely, 2^22781002025 is an apocalyptic number.

22781002025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22781002025 is a deficient number, since it is larger than the sum of its proper divisors (5544423127).

22781002025 is a wasteful number, since it uses less digits than its factorization.

22781002025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483320 (or 2483315 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The spelling of 22781002025 in words is "twenty-two billion, seven hundred eighty-one million, two thousand, twenty-five".