3935799693225 has 81 divisors (see below), whose sum is σ = 7441075027269. Its totient is φ = 1988328902400.

The previous prime is 3935799693211. The next prime is 3935799693247. The reversal of 3935799693225 is 5223969975393.

The square root of 3935799693225 is 1983885.

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

3935799693225 is a `hidden beast` number, since 393 + 5 + 7 + 9 + 9 + 6 + 9 + 3 + 225 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 99105965721 + 3836693727504 = 314811^2 + 1958748^2 .

It is not a de Polignac number, because 3935799693225 - 2¹³ = 3935799685033 is a prime.

It is a super-2 number, since 2×3935799693225² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 565403745 + ... + 565410705.

Almost surely, 2^{3935799693225} is an apocalyptic number.

3935799693225 is the 1983885-th square number.

3935799693225 is the 991943-rd centered octagonal number.

It is an amenable number.

3935799693225 is a deficient number, since it is larger than the sum of its proper divisors (3505275334044).

3935799693225 is an frugal number, since it uses more digits than its factorization.

3935799693225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13976 (or 6988 counting only the distinct ones).

The product of its digits is 744017400, while the sum is 72.

The spelling of 3935799693225 in words is "three trillion, nine hundred thirty-five billion, seven hundred ninety-nine million, six hundred ninety-three thousand, two hundred twenty-five".