23518261225 has 24 divisors (see below), whose sum is σ = 30301364160. Its totient is φ = 18085677120.

The previous prime is 23518261219. The next prime is 23518261229. The reversal of 23518261225 is 52216281532.

It is not a de Polignac number, because 23518261225 - 2¹⁵ = 23518228457 is a prime.

It is a super-2 number, since 2×23518261225² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23518261229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93124 + ... + 236026.

It is an arithmetic number, because the mean of its divisors is an integer number (1262556840).

Almost surely, 2^23518261225 is an apocalyptic number.

23518261225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23518261225 is a deficient number, since it is larger than the sum of its proper divisors (6783102935).

23518261225 is a wasteful number, since it uses less digits than its factorization.

23518261225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143169 (or 143164 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The spelling of 23518261225 in words is "twenty-three billion, five hundred eighteen million, two hundred sixty-one thousand, two hundred twenty-five".