25798624632 has 128 divisors (see below), whose sum is σ = 78225523200. Its totient is φ = 7812979200.

The previous prime is 25798624541. The next prime is 25798624637. The reversal of 25798624632 is 23642689752.

25798624632 is a `hidden beast` number, since 2 + 5 + 7 + 9 + 8 + 624 + 6 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25798624637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6857632 + ... + 6861392.

It is an arithmetic number, because the mean of its divisors is an integer number (611136900).

Almost surely, 2^25798624632 is an apocalyptic number.

25798624632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25798624632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39112761600).

25798624632 is an abundant number, since it is smaller than the sum of its proper divisors (52426898568).

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

25798624632 is a wasteful number, since it uses less digits than its factorization.

25798624632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674 (or 6664 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 25798624632 in words is "twenty-five billion, seven hundred ninety-eight million, six hundred twenty-four thousand, six hundred thirty-two".