25671834624 has 88 divisors (see below), whose sum is σ = 68536802448. Its totient is φ = 8543272960.

The previous prime is 25671834613. The next prime is 25671834647. The reversal of 25671834624 is 42643817652.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1962634 + ... + 1975670.

Almost surely, 2^25671834624 is an apocalyptic number.

25671834624 is a gapful number since it is divisible by the number (24) 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 25671834624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34268401224).

25671834624 is an abundant number, since it is smaller than the sum of its proper divisors (42864967824).

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

25671834624 is a wasteful number, since it uses less digits than its factorization.

25671834624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13701 (or 13683 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 48.

The spelling of 25671834624 in words is "twenty-five billion, six hundred seventy-one million, eight hundred thirty-four thousand, six hundred twenty-four".