517370911225 has 27 divisors (see below), whose sum is σ = 746317458351. Its totient is φ = 354751362000.

The previous prime is 517370911199. The next prime is 517370911229. The reversal of 517370911225 is 522119073715.

The square root of 517370911225 is 719285.

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., 186253528041 + 331117383184 = 431571^2 + 575428^2 .

It is not a de Polignac number, because 517370911225 - 2¹⁹ = 517370386937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (517370911229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 25164700 + ... + 25185250.

Almost surely, 2^517370911225 is an apocalyptic number.

517370911225 is the 719285-th square number.

517370911225 is the 359643-rd centered octagonal number.

It is an amenable number.

517370911225 is a deficient number, since it is larger than the sum of its proper divisors (228946547126).

517370911225 is an frugal number, since it uses more digits than its factorization.

517370911225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41126 (or 20563 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 43.

The spelling of 517370911225 in words is "five hundred seventeen billion, three hundred seventy million, nine hundred eleven thousand, two hundred twenty-five".