7705259947225 has 9 divisors (see below), whose sum is σ = 9554539544767. Its totient is φ = 6164196854440.

The previous prime is 7705259947183. The next prime is 7705259947267. The reversal of 7705259947225 is 5227499525077.

The square root of 7705259947225 is 2775835.

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

It is an interprime number because it is at equal distance from previous prime (7705259947183) and next prime (7705259947267).

It can be written as a sum of positive squares in only one way, i.e., 2773893581001 + 4931366366224 = 1665501^2 + 2220668^2 .

It is not a de Polignac number, because 7705259947225 - 2⁴¹ = 5506236691673 is a prime.

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, 13601592 + ... + 14156758.

Almost surely, 2^{7705259947225} is an apocalyptic number.

7705259947225 is the 2775835-th square number.

7705259947225 is the 1387918-th centered octagonal number.

It is an amenable number.

7705259947225 is a deficient number, since it is larger than the sum of its proper divisors (1849279597542).

7705259947225 is an frugal number, since it uses more digits than its factorization.

7705259947225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110344 (or 555172 counting only the distinct ones).

The product of its (nonzero) digits is 111132000, while the sum is 64.

Multiplying 7705259947225 by its sum of digits (64), we get a square (493136636622400 = 22206680²).

The spelling of 7705259947225 in words is "seven trillion, seven hundred five billion, two hundred fifty-nine million, nine hundred forty-seven thousand, two hundred twenty-five".