764246025 has 81 divisors (see below), whose sum is σ = 1459733301. Its totient is φ = 382164480.

The previous prime is 764246023. The next prime is 764246071. The reversal of 764246025 is 520642467.

The square root of 764246025 is 27645.

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

764246025 is a `hidden beast` number, since 7 + 6 + 42 + 4 + 602 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 28100601 + 736145424 = 5301^2 + 27132^2 .

It is not a de Polignac number, because 764246025 - 2¹ = 764246023 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (764246023) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 7878777 + ... + 7878873.

Almost surely, 2^764246025 is an apocalyptic number.

764246025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

764246025 is the 27645-th square number.

764246025 is the 13823-rd centered octagonal number.

It is an amenable number.

764246025 is a deficient number, since it is larger than the sum of its proper divisors (695487276).

764246025 is a wasteful number, since it uses less digits than its factorization.

764246025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The cubic root of 764246025 is about 914.2768630270.

Multiplying 764246025 by its sum of digits (36), we get a square (27512856900 = 165870²).

The spelling of 764246025 in words is "seven hundred sixty-four million, two hundred forty-six thousand, twenty-five".