23115435421025 has 6 divisors (see below), whose sum is σ = 28663139922102. Its totient is φ = 18492348336800.

The previous prime is 23115435420977. The next prime is 23115435421033. The reversal of 23115435421025 is 52012453451132.

It can be written as a sum of positive squares in 3 ways, for example, as 2479166764369 + 20636268656656 = 1574537^2 + 4542716^2 .

It is not a de Polignac number, because 23115435421025 - 2³² = 23111140453729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23115435421025.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 462308708396 + ... + 462308708445.

It is an arithmetic number, because the mean of its divisors is an integer number (4777189987017).

Almost surely, 2^{23115435421025} is an apocalyptic number.

23115435421025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23115435421025 is a deficient number, since it is larger than the sum of its proper divisors (5547704501077).

23115435421025 is an equidigital number, since it uses as much as digits as its factorization.

23115435421025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924617416851 (or 924617416846 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 23115435421025 its reverse (52012453451132), we get a palindrome (75127888872157).

The spelling of 23115435421025 in words is "twenty-three trillion, one hundred fifteen billion, four hundred thirty-five million, four hundred twenty-one thousand, twenty-five".