122557140625 has 14 divisors (see below), whose sum is σ = 153194484398. Its totient is φ = 98045700000.

The previous prime is 122557140611. The next prime is 122557140683. The reversal of 122557140625 is 526041755221.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 121794718081 + 762422544 = 348991^2 + 27612^2 .

It is not a de Polignac number, because 122557140625 - 2⁵ = 122557140593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 3906204 + ... + 3937453.

Almost surely, 2^122557140625 is an apocalyptic number.

It is an amenable number.

122557140625 is a deficient number, since it is larger than the sum of its proper divisors (30637343773).

122557140625 is an frugal number, since it uses more digits than its factorization.

122557140625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7843687 (or 7843662 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

Adding to 122557140625 its reverse (526041755221), we get a palindrome (648598895846).

The spelling of 122557140625 in words is "one hundred twenty-two billion, five hundred fifty-seven million, one hundred forty thousand, six hundred twenty-five".