651125 has 8 divisors (see below), whose sum is σ = 812760. Its totient is φ = 520800.

The previous prime is 651109. The next prime is 651127. The reversal of 651125 is 521156.

It can be written as a sum of positive squares in 4 ways, for example, as 7921 + 643204 = 89^2 + 802^2 .

It is not a de Polignac number, because 651125 - 2⁴ = 651109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 651097 and 651106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2480 + ... + 2729.

It is an arithmetic number, because the mean of its divisors is an integer number (101595).

2⁶⁵¹¹²⁵ is an apocalyptic number.

It is an amenable number.

651125 is a deficient number, since it is larger than the sum of its proper divisors (161635).

651125 is an equidigital number, since it uses as much as digits as its factorization.

651125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224 (or 5214 counting only the distinct ones).

The product of its digits is 300, while the sum is 20.

The square root of 651125 is about 806.9231685855. The cubic root of 651125 is about 86.6738570629.

The spelling of 651125 in words is "six hundred fifty-one thousand, one hundred twenty-five".