1161858325 has 6 divisors (see below), whose sum is σ = 1440704354. Its totient is φ = 929486640.

The previous prime is 1161858307. The next prime is 1161858329. The reversal of 1161858325 is 5238581611.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 284158449 + 877699876 = 16857^2 + 29626^2 .

It is not a de Polignac number, because 1161858325 - 2¹⁷ = 1161727253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161858329) 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, 23237142 + ... + 23237191.

Almost surely, 2^1161858325 is an apocalyptic number.

It is an amenable number.

1161858325 is a deficient number, since it is larger than the sum of its proper divisors (278846029).

1161858325 is an equidigital number, since it uses as much as digits as its factorization.

1161858325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46474343 (or 46474338 counting only the distinct ones).

The product of its digits is 57600, while the sum is 40.

The square root of 1161858325 is about 34086.0429648265. The cubic root of 1161858325 is about 1051.2783598394.

The spelling of 1161858325 in words is "one billion, one hundred sixty-one million, eight hundred fifty-eight thousand, three hundred twenty-five".