23120421025 has 36 divisors (see below), whose sum is σ = 31182347952. Its totient is φ = 16997622720.

The previous prime is 23120421019. The next prime is 23120421029. The reversal of 23120421025 is 52012402132.

It is a happy number.

It is not a de Polignac number, because 23120421025 - 2³ = 23120421017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23120420987 and 23120421005.

It is not an unprimeable number, because it can be changed into a prime (23120421029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 947022 + ... + 971128.

It is an arithmetic number, because the mean of its divisors is an integer number (866176332).

Almost surely, 2^23120421025 is an apocalyptic number.

23120421025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23120421025 is a deficient number, since it is larger than the sum of its proper divisors (8061926927).

23120421025 is a wasteful number, since it uses less digits than its factorization.

23120421025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24370 (or 24352 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 23120421025 its reverse (52012402132), we get a palindrome (75132823157).

The spelling of 23120421025 in words is "twenty-three billion, one hundred twenty million, four hundred twenty-one thousand, twenty-five".