1161925 has 6 divisors (see below), whose sum is σ = 1440818. Its totient is φ = 929520.

The previous prime is 1161893. The next prime is 1161929. The reversal of 1161925 is 5291611.

It can be written as a sum of positive squares in 3 ways, for example, as 14884 + 1147041 = 122^2 + 1071^2 .

It is not a de Polignac number, because 1161925 - 2⁵ = 1161893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 46477 = 1161925 / (1 + 1 + 6 + 1 + 9 + 2 + 5).

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 1161925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23214 + ... + 23263.

2^1161925 is an apocalyptic number.

It is an amenable number.

1161925 is a deficient number, since it is larger than the sum of its proper divisors (278893).

1161925 is an equidigital number, since it uses as much as digits as its factorization.

1161925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46487 (or 46482 counting only the distinct ones).

The product of its digits is 540, while the sum is 25.

The square root of 1161925 is about 1077.9262497963. The cubic root of 1161925 is about 105.1298469188.

The spelling of 1161925 in words is "one million, one hundred sixty-one thousand, nine hundred twenty-five".