23125042555 has 4 divisors (see below), whose sum is σ = 27750051072. Its totient is φ = 18500034040.

The previous prime is 23125042553. The next prime is 23125042573. The reversal of 23125042555 is 55524052132.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23125042555 - 2¹ = 23125042553 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 23125042555.

It is not an unprimeable number, because it can be changed into a prime (23125042553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312504251 + ... + 2312504260.

It is an arithmetic number, because the mean of its divisors is an integer number (6937512768).

Almost surely, 2^23125042555 is an apocalyptic number.

23125042555 is a deficient number, since it is larger than the sum of its proper divisors (4625008517).

23125042555 is an equidigital number, since it uses as much as digits as its factorization.

23125042555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625008516.

The product of its (nonzero) digits is 60000, while the sum is 34.

Adding to 23125042555 its reverse (55524052132), we get a palindrome (78649094687).

The spelling of 23125042555 in words is "twenty-three billion, one hundred twenty-five million, forty-two thousand, five hundred fifty-five".