1165025045 has 16 divisors (see below), whose sum is σ = 1516375728. Its totient is φ = 855797760.

The previous prime is 1165025023. The next prime is 1165025083. The reversal of 1165025045 is 5405205611.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 34586161 + 1130438884 = 5881^2 + 33622^2 .

It is not a de Polignac number, because 1165025045 - 2¹⁴ = 1165008661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1165024999 and 1165025017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163664 + ... + 170633.

It is an arithmetic number, because the mean of its divisors is an integer number (94773483).

Almost surely, 2^1165025045 is an apocalyptic number.

It is an amenable number.

1165025045 is a deficient number, since it is larger than the sum of its proper divisors (351350683).

1165025045 is a wasteful number, since it uses less digits than its factorization.

1165025045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334360.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1165025045 is about 34132.4632131934. The cubic root of 1165025045 is about 1052.2326024651.

The spelling of 1165025045 in words is "one billion, one hundred sixty-five million, twenty-five thousand, forty-five".