25783572672 has 280 divisors, whose sum is σ = 89795158992. Its totient is φ = 7211980800.

The previous prime is 25783572671. The next prime is 25783572817. The reversal of 25783572672 is 27627538752.

25783572672 is a `hidden beast` number, since 2 + 5 + 7 + 8 + 3 + 572 + 67 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (25783572671) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 723922 + ... + 758702.

Almost surely, 2^25783572672 is an apocalyptic number.

25783572672 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 25783572672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44897579496).

25783572672 is an abundant number, since it is smaller than the sum of its proper divisors (64011586320).

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

25783572672 is a wasteful number, since it uses less digits than its factorization.

25783572672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34829 (or 34810 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 54.

The spelling of 25783572672 in words is "twenty-five billion, seven hundred eighty-three million, five hundred seventy-two thousand, six hundred seventy-two".