23725851920 has 80 divisors (see below), whose sum is σ = 56632946688. Its totient is φ = 9239508480.

The previous prime is 23725851889. The next prime is 23725851949. The reversal of 23725851920 is 2915852732.

It is a tau number, because it is divible by the number of its divisors (80).

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, 701642 + ... + 734678.

Almost surely, 2^23725851920 is an apocalyptic number.

23725851920 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 23725851920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28316473344).

23725851920 is an abundant number, since it is smaller than the sum of its proper divisors (32907094768).

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

23725851920 is a wasteful number, since it uses less digits than its factorization.

23725851920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33288 (or 33282 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 23725851920 in words is "twenty-three billion, seven hundred twenty-five million, eight hundred fifty-one thousand, nine hundred twenty".