123937788580225 has 9 divisors (see below), whose sum is σ = 153682926862467. Its totient is φ = 99150186333240.

The previous prime is 123937788580213. The next prime is 123937788580231. The reversal of 123937788580225 is 522085887739321.

The square root of 123937788580225 is 11132735.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 44617603888881 + 79320184691344 = 6679641^2 + 8906188^2 .

It is not a de Polignac number, because 123937788580225 - 2¹⁹ = 123937788055937 is a prime.

It is a super-2 number, since 2×123937788580225² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 54550402 + ... + 56776948.

Almost surely, 2^{123937788580225} is an apocalyptic number.

123937788580225 is the 11132735-th square number.

123937788580225 is the 5566368-th centered octagonal number.

It is an amenable number.

123937788580225 is a deficient number, since it is larger than the sum of its proper divisors (29745138282242).

123937788580225 is an frugal number, since it uses more digits than its factorization.

123937788580225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453104 (or 2226552 counting only the distinct ones).

The product of its (nonzero) digits is 406425600, while the sum is 70.

The spelling of 123937788580225 in words is "one hundred twenty-three trillion, nine hundred thirty-seven billion, seven hundred eighty-eight million, five hundred eighty thousand, two hundred twenty-five".