25213683720 has 128 divisors (see below), whose sum is σ = 76219678080. Its totient is φ = 6672384000.

The previous prime is 25213683667. The next prime is 25213683721. The reversal of 25213683720 is 2738631252.

It is not an unprimeable number, because it can be changed into a prime (25213683721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13921615 + ... + 13923425.

It is an arithmetic number, because the mean of its divisors is an integer number (595466235).

Almost surely, 2^25213683720 is an apocalyptic number.

25213683720 is a gapful number since it is divisible by the number (20) 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 25213683720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38109839040).

25213683720 is an abundant number, since it is smaller than the sum of its proper divisors (51005994360).

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

25213683720 is a wasteful number, since it uses less digits than its factorization.

25213683720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647 (or 2643 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 25213683720 in words is "twenty-five billion, two hundred thirteen million, six hundred eighty-three thousand, seven hundred twenty".