23259401256 has 64 divisors (see below), whose sum is σ = 71567395200. Its totient is φ = 6134347008.

The previous prime is 23259401239. The next prime is 23259401257. The reversal of 23259401256 is 65210495232.

It is a super-2 number, since 2×23259401256² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (23259401257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5322771 + ... + 5327138.

It is an arithmetic number, because the mean of its divisors is an integer number (1118240550).

Almost surely, 2^23259401256 is an apocalyptic number.

23259401256 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23259401256 is an abundant number, since it is smaller than the sum of its proper divisors (48307993944).

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

23259401256 is a wasteful number, since it uses less digits than its factorization.

23259401256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10649938 (or 10649934 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

Adding to 23259401256 its reverse (65210495232), we get a palindrome (88469896488).

The spelling of 23259401256 in words is "twenty-three billion, two hundred fifty-nine million, four hundred one thousand, two hundred fifty-six".