125520322553 has 4 divisors (see below), whose sum is σ = 129569365248. Its totient is φ = 121471279860.

The previous prime is 125520322549. The next prime is 125520322559. The reversal of 125520322553 is 355223025521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125520322553 - 2² = 125520322549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125520322559) 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, 2024521301 + ... + 2024521362.

It is an arithmetic number, because the mean of its divisors is an integer number (32392341312).

Almost surely, 2^125520322553 is an apocalyptic number.

It is an amenable number.

125520322553 is a deficient number, since it is larger than the sum of its proper divisors (4049042695).

125520322553 is an equidigital number, since it uses as much as digits as its factorization.

125520322553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4049042694.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 125520322553 in words is "one hundred twenty-five billion, five hundred twenty million, three hundred twenty-two thousand, five hundred fifty-three".