6513125 has 20 divisors (see below), whose sum is σ = 8631612. Its totient is φ = 4896000.

The previous prime is 6513121. The next prime is 6513127. The reversal of 6513125 is 5213156.

It can be written as a sum of positive squares in 10 ways, for example, as 5997601 + 515524 = 2449^2 + 718^2 .

It is not a de Polignac number, because 6513125 - 2² = 6513121 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6513125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6513121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10319 + ... + 10931.

Almost surely, 2^6513125 is an apocalyptic number.

It is an amenable number.

6513125 is a deficient number, since it is larger than the sum of its proper divisors (2118487).

6513125 is an equidigital number, since it uses as much as digits as its factorization.

6513125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 635 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 6513125 is about 2552.0824829931. The cubic root of 6513125 is about 186.7510867444.

It can be divided in two parts, 65131 and 25, that added together give a palindrome (65156).

The spelling of 6513125 in words is "six million, five hundred thirteen thousand, one hundred twenty-five".