641420325 has 72 divisors (see below), whose sum is σ = 1414020608. Its totient is φ = 270656640.

The previous prime is 641420309. The next prime is 641420333. The reversal of 641420325 is 523024146.

It is not a de Polignac number, because 641420325 - 2⁴ = 641420309 is a prime.

It is a super-2 number, since 2×641420325² = 822840066646211250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4812 + ... + 36138.

Almost surely, 2^641420325 is an apocalyptic number.

641420325 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

641420325 is an abundant number, since it is smaller than the sum of its proper divisors (772600283).

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

641420325 is a wasteful number, since it uses less digits than its factorization.

641420325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31363 (or 31355 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 641420325 is about 25326.2773616653. The cubic root of 641420325 is about 862.4109044704.

The spelling of 641420325 in words is "six hundred forty-one million, four hundred twenty thousand, three hundred twenty-five".