641025532 has 24 divisors (see below), whose sum is σ = 1282839264. Its totient is φ = 274556352.

The previous prime is 641025521. The next prime is 641025569. The reversal of 641025532 is 235520146.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 641025532.

It is a congruent number.

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, 46458 + ... + 58654.

It is an arithmetic number, because the mean of its divisors is an integer number (53451636).

Almost surely, 2^641025532 is an apocalyptic number.

It is an amenable number.

641025532 is an abundant number, since it is smaller than the sum of its proper divisors (641813732).

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

641025532 is a wasteful number, since it uses less digits than its factorization.

641025532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14085 (or 14083 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 641025532 is about 25318.4820240077. The cubic root of 641025532 is about 862.2339307282.

Adding to 641025532 its reverse (235520146), we get a palindrome (876545678).

The spelling of 641025532 in words is "six hundred forty-one million, twenty-five thousand, five hundred thirty-two".