7993879749025 has 9 divisors (see below), whose sum is σ = 9912428418361. Its totient is φ = 6395092489840.

The previous prime is 7993879749013. The next prime is 7993879749059. The reversal of 7993879749025 is 5209479783997.

The square root of 7993879749025 is 2827345.

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 3371310948769 + 4622568800256 = 1836113^2 + 2150016^2 .

It is not a de Polignac number, because 7993879749025 - 2¹⁷ = 7993879617953 is a prime.

It is a super-2 number, since 2×7993879749025² (a number of 27 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, 13853991 + ... + 14419459.

Almost surely, 2^{7993879749025} is an apocalyptic number.

7993879749025 is the 2827345-th square number.

7993879749025 is the 1413673-rd centered octagonal number.

It is an amenable number.

7993879749025 is a deficient number, since it is larger than the sum of its proper divisors (1918548669336).

7993879749025 is an frugal number, since it uses more digits than its factorization.

7993879749025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130948 (or 565474 counting only the distinct ones).

The product of its (nonzero) digits is 2160406080, while the sum is 79.

The spelling of 7993879749025 in words is "seven trillion, nine hundred ninety-three billion, eight hundred seventy-nine million, seven hundred forty-nine thousand, twenty-five".