519747274225 has 27 divisors (see below), whose sum is σ = 673833575233. Its totient is φ = 397656211040.

The previous prime is 519747274217. The next prime is 519747274237. The reversal of 519747274225 is 522472747915.

The square root of 519747274225 is 720935.

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

It can be written as a sum of positive squares in 4 ways, for example, as 54252192241 + 465495081984 = 232921^2 + 682272^2 .

It is not a de Polignac number, because 519747274225 - 2³ = 519747274217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 82904391 + ... + 82910659.

Almost surely, 2^519747274225 is an apocalyptic number.

519747274225 is the 720935-th square number.

519747274225 is the 360468-th centered octagonal number.

It is an amenable number.

519747274225 is a deficient number, since it is larger than the sum of its proper divisors (154086301008).

519747274225 is an frugal number, since it uses more digits than its factorization.

519747274225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12594 (or 6297 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 55.

The spelling of 519747274225 in words is "five hundred nineteen billion, seven hundred forty-seven million, two hundred seventy-four thousand, two hundred twenty-five".