7777660325 has 12 divisors (see below), whose sum is σ = 9645807108. Its totient is φ = 6221155200.

The previous prime is 7777660321. The next prime is 7777660337. The reversal of 7777660325 is 5230667777.

It can be written as a sum of positive squares in 6 ways, for example, as 270997444 + 7506662881 = 16462^2 + 86641^2 .

It is not a de Polignac number, because 7777660325 - 2² = 7777660321 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7777660321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168785 + ... + 209865.

It is an arithmetic number, because the mean of its divisors is an integer number (803817259).

Almost surely, 2^7777660325 is an apocalyptic number.

It is an amenable number.

7777660325 is a deficient number, since it is larger than the sum of its proper divisors (1868146783).

7777660325 is a wasteful number, since it uses less digits than its factorization.

7777660325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48664 (or 48659 counting only the distinct ones).

The product of its (nonzero) digits is 2593080, while the sum is 50.

The square root of 7777660325 is about 88191.0444716469. The cubic root of 7777660325 is about 1981.2973442497.

The spelling of 7777660325 in words is "seven billion, seven hundred seventy-seven million, six hundred sixty thousand, three hundred twenty-five".