125520113133 has 8 divisors (see below), whose sum is σ = 185955723200. Its totient is φ = 83680075404.

The previous prime is 125520113101. The next prime is 125520113137. The reversal of 125520113133 is 331311025521.

125520113133 is a `hidden beast` number, since 1 + 2 + 5 + 520 + 1 + 1 + 3 + 133 = 666.

It is not a de Polignac number, because 125520113133 - 2⁵ = 125520113101 is a prime.

It is a super-2 number, since 2×125520113133² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4648893079 = 125520113133 / (1 + 2 + 5 + 5 + 2 + 0 + 1 + 1 + 3 + 1 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125520113097 and 125520113106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125520113137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2324446513 + ... + 2324446566.

It is an arithmetic number, because the mean of its divisors is an integer number (23244465400).

Almost surely, 2^125520113133 is an apocalyptic number.

It is an amenable number.

125520113133 is a deficient number, since it is larger than the sum of its proper divisors (60435610067).

125520113133 is an equidigital number, since it uses as much as digits as its factorization.

125520113133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4648893088 (or 4648893082 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 125520113133 its reverse (331311025521), we get a palindrome (456831138654).

The spelling of 125520113133 in words is "one hundred twenty-five billion, five hundred twenty million, one hundred thirteen thousand, one hundred thirty-three".