764799025 has 9 divisors (see below), whose sum is σ = 948522283. Its totient is φ = 611728600.

The previous prime is 764799023. The next prime is 764799031. The reversal of 764799025 is 520997467.

The square root of 764799025 is 27655.

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

764799025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 275327649 + 489471376 = 16593^2 + 22124^2 .

It is not a de Polignac number, because 764799025 - 2¹ = 764799023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 764799025.

It is not an unprimeable number, because it can be changed into a prime (764799023) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 135510 + ... + 141040.

Almost surely, 2^764799025 is an apocalyptic number.

764799025 is the 27655-th square number.

764799025 is the 13828-th centered octagonal number.

It is an amenable number.

764799025 is a deficient number, since it is larger than the sum of its proper divisors (183723258).

764799025 is an frugal number, since it uses more digits than its factorization.

764799025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11072 (or 5536 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 49.

The cubic root of 764799025 is about 914.4973300799.

Multiplying 764799025 by its sum of digits (49), we get a square (37475152225 = 193585²).

The spelling of 764799025 in words is "seven hundred sixty-four million, seven hundred ninety-nine thousand, twenty-five".