25746634228 has 48 divisors (see below), whose sum is σ = 55951974400. Its totient is φ = 10116303840.

The previous prime is 25746634213. The next prime is 25746634237. The reversal of 25746634228 is 82243664752.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 764088 + ... + 797071.

Almost surely, 2^25746634228 is an apocalyptic number.

25746634228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25746634228 is an abundant number, since it is smaller than the sum of its proper divisors (30205340172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25746634228 is a wasteful number, since it uses less digits than its factorization.

25746634228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561220 (or 1561218 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 49.

The spelling of 25746634228 in words is "twenty-five billion, seven hundred forty-six million, six hundred thirty-four thousand, two hundred twenty-eight".