641125 has 16 divisors (see below), whose sum is σ = 838656. Its totient is φ = 488400.

The previous prime is 641101. The next prime is 641129. The reversal of 641125 is 521146.

It is not a de Polignac number, because 641125 - 2⁵ = 641093 is a prime.

It is a super-2 number, since 2×641125² = 822082531250, which contains 22 as substring.

It is a Duffinian number.

641125 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2764 + ... + 2986.

It is an arithmetic number, because the mean of its divisors is an integer number (52416).

2⁶⁴¹¹²⁵ is an apocalyptic number.

It is an amenable number.

641125 is a deficient number, since it is larger than the sum of its proper divisors (197531).

641125 is a wasteful number, since it uses less digits than its factorization.

641125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 251 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 641125 is about 800.7028162808. The cubic root of 641125 is about 86.2278526065.

The spelling of 641125 in words is "six hundred forty-one thousand, one hundred twenty-five".