394566141025 has 81 divisors (see below), whose sum is σ = 577736113017. Its totient is φ = 266534486400.

The previous prime is 394566140929. The next prime is 394566141049. The reversal of 394566141025 is 520141665493.

The square root of 394566141025 is 628145.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1151177041 + 393414963984 = 33929^2 + 627228^2 .

It is not a de Polignac number, because 394566141025 - 2⁷ = 394566140897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 2880044757 + ... + 2880044893.

Almost surely, 2^394566141025 is an apocalyptic number.

394566141025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

394566141025 is the 628145-th square number.

394566141025 is the 314073-rd centered octagonal number.

It is an amenable number.

394566141025 is a deficient number, since it is larger than the sum of its proper divisors (183169971992).

394566141025 is an equidigital number, since it uses as much as digits as its factorization.

394566141025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 394566141025 in words is "three hundred ninety-four billion, five hundred sixty-six million, one hundred forty-one thousand, twenty-five".