641125012 has 96 divisors (see below), whose sum is σ = 1371009024. Its totient is φ = 258854400.

The previous prime is 641125007. The next prime is 641125021. The reversal of 641125012 is 210521146.

It is a super-2 number, since 2×641125012² = 822082562024000288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 996763 + ... + 997405.

It is an arithmetic number, because the mean of its divisors is an integer number (14281344).

Almost surely, 2^641125012 is an apocalyptic number.

641125012 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

641125012 is an abundant number, since it is smaller than the sum of its proper divisors (729884012).

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

641125012 is a wasteful number, since it uses less digits than its factorization.

641125012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 641125012 is about 25320.4465205494. The cubic root of 641125012 is about 862.2785314450.

Adding to 641125012 its reverse (210521146), we get a palindrome (851646158).

The spelling of 641125012 in words is "six hundred forty-one million, one hundred twenty-five thousand, twelve".