122531531425 has 12 divisors (see below), whose sum is σ = 151957087740. Its totient is φ = 98013619520.

The previous prime is 122531531399. The next prime is 122531531471. The reversal of 122531531425 is 524135135221.

It can be written as a sum of positive squares in 6 ways, for example, as 1296648081 + 121234883344 = 36009^2 + 348188^2 .

It is not a de Polignac number, because 122531531425 - 2²⁷ = 122397313697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71530 + ... + 500179.

It is an arithmetic number, because the mean of its divisors is an integer number (12663090645).

Almost surely, 2^122531531425 is an apocalyptic number.

It is an amenable number.

122531531425 is a deficient number, since it is larger than the sum of its proper divisors (29425556315).

122531531425 is an equidigital number, since it uses as much as digits as its factorization.

122531531425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580292 (or 580287 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

Adding to 122531531425 its reverse (524135135221), we get a palindrome (646666666646).

The spelling of 122531531425 in words is "one hundred twenty-two billion, five hundred thirty-one million, five hundred thirty-one thousand, four hundred twenty-five".