122173435625 has 10 divisors (see below), whose sum is σ = 152667925938. Its totient is φ = 97738748000.

The previous prime is 122173435621. The next prime is 122173435669. The reversal of 122173435625 is 526534371221.

It can be written as a sum of positive squares in 5 ways, for example, as 23833493161 + 98339942464 = 154381^2 + 313592^2 .

It is not a de Polignac number, because 122173435625 - 2² = 122173435621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122173435621) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 97738124 + ... + 97739373.

Almost surely, 2^122173435625 is an apocalyptic number.

It is an amenable number.

122173435625 is a deficient number, since it is larger than the sum of its proper divisors (30494490313).

122173435625 is an frugal number, since it uses more digits than its factorization.

122173435625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195477517 (or 195477502 counting only the distinct ones).

The product of its digits is 302400, while the sum is 41.

The spelling of 122173435625 in words is "one hundred twenty-two billion, one hundred seventy-three million, four hundred thirty-five thousand, six hundred twenty-five".