23025640656 has 160 divisors (see below), whose sum is σ = 64324454400. Its totient is φ = 7074432000.

The previous prime is 23025640579. The next prime is 23025640657. The reversal of 23025640656 is 65604652032.

It is a super-2 number, since 2×23025640656² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23025640657) 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, 7671156 + ... + 7674156.

It is an arithmetic number, because the mean of its divisors is an integer number (402027840).

Almost surely, 2^23025640656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23025640656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32162227200).

23025640656 is an abundant number, since it is smaller than the sum of its proper divisors (41298813744).

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

23025640656 is a wasteful number, since it uses less digits than its factorization.

23025640656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257 (or 3251 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 23025640656 in words is "twenty-three billion, twenty-five million, six hundred forty thousand, six hundred fifty-six".