7782790725 has 72 divisors (see below), whose sum is σ = 14124344000. Its totient is φ = 4096189440.

The previous prime is 7782790721. The next prime is 7782790733. The reversal of 7782790725 is 5270972877.

It is not a de Polignac number, because 7782790725 - 2² = 7782790721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7782790721) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11563989 + ... + 11564661.

Almost surely, 2^7782790725 is an apocalyptic number.

7782790725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7782790725 is a deficient number, since it is larger than the sum of its proper divisors (6341553275).

7782790725 is a wasteful number, since it uses less digits than its factorization.

7782790725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291 (or 1283 counting only the distinct ones).

The product of its (nonzero) digits is 3457440, while the sum is 54.

The square root of 7782790725 is about 88220.1265301745. The cubic root of 7782790725 is about 1981.7328914137.

The spelling of 7782790725 in words is "seven billion, seven hundred eighty-two million, seven hundred ninety thousand, seven hundred twenty-five".