1613125 has 20 divisors (see below), whose sum is σ = 2108700. Its totient is φ = 1232000.

The previous prime is 1613123. The next prime is 1613141. The reversal of 1613125 is 5213161.

It can be written as a sum of positive squares in 10 ways, for example, as 1425636 + 187489 = 1194^2 + 433^2 .

It is not a de Polignac number, because 1613125 - 2¹ = 1613123 is a prime.

1613125 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613123) 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, 18081 + ... + 18169.

It is an arithmetic number, because the mean of its divisors is an integer number (105435).

2^1613125 is an apocalyptic number.

It is an amenable number.

1613125 is a deficient number, since it is larger than the sum of its proper divisors (495575).

1613125 is an frugal number, since it uses more digits than its factorization.

1613125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 123 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 1613125 is about 1270.0885795881. The cubic root of 1613125 is about 117.2796534397.

Adding to 1613125 its reverse (5213161), we get a palindrome (6826286).

The spelling of 1613125 in words is "one million, six hundred thirteen thousand, one hundred twenty-five".