23425121533555 has 64 divisors (see below), whose sum is σ = 34297823692800. Its totient is φ = 15001084707840.

The previous prime is 23425121533549. The next prime is 23425121533571. The reversal of 23425121533555 is 55533512152432.

It is not a de Polignac number, because 23425121533555 - 2²³ = 23425113144947 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 380191591 + ... + 380253199.

It is an arithmetic number, because the mean of its divisors is an integer number (535903495200).

Almost surely, 2^{23425121533555} is an apocalyptic number.

23425121533555 is a deficient number, since it is larger than the sum of its proper divisors (10872702159245).

23425121533555 is a wasteful number, since it uses less digits than its factorization.

23425121533555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69764.

The product of its digits is 2700000, while the sum is 46.

Adding to 23425121533555 its reverse (55533512152432), we get a palindrome (78958633685987).

The spelling of 23425121533555 in words is "twenty-three trillion, four hundred twenty-five billion, one hundred twenty-one million, five hundred thirty-three thousand, five hundred fifty-five".