643825482 has 16 divisors (see below), whose sum is σ = 1296916320. Its totient is φ = 213064272.

The previous prime is 643825459. The next prime is 643825517. The reversal of 643825482 is 284528346.

It is a super-2 number, since 2×643825482² = 829022502545064648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385153 + ... + 386820.

It is an arithmetic number, because the mean of its divisors is an integer number (81057270).

Almost surely, 2^643825482 is an apocalyptic number.

643825482 is an abundant number, since it is smaller than the sum of its proper divisors (653090838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

643825482 is a wasteful number, since it uses less digits than its factorization.

643825482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772117.

The product of its digits is 368640, while the sum is 42.

The square root of 643825482 is about 25373.7163616211. The cubic root of 643825482 is about 863.4874977332.

The spelling of 643825482 in words is "six hundred forty-three million, eight hundred twenty-five thousand, four hundred eighty-two".