1161098525 has 12 divisors (see below), whose sum is σ = 1454020404. Its totient is φ = 919680000.

The previous prime is 1161098447. The next prime is 1161098527. The reversal of 1161098525 is 5258901611.

It can be written as a sum of positive squares in 6 ways, for example, as 65885689 + 1095212836 = 8117^2 + 33094^2 .

It is not a de Polignac number, because 1161098525 - 2¹⁴ = 1161082141 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161098527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227396 + ... + 232445.

It is an arithmetic number, because the mean of its divisors is an integer number (121168367).

Almost surely, 2^1161098525 is an apocalyptic number.

It is an amenable number.

1161098525 is a deficient number, since it is larger than the sum of its proper divisors (292921879).

1161098525 is a wasteful number, since it uses less digits than its factorization.

1161098525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459952 (or 459947 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 38.

The square root of 1161098525 is about 34074.8958178892. The cubic root of 1161098525 is about 1051.0491478775.

The spelling of 1161098525 in words is "one billion, one hundred sixty-one million, ninety-eight thousand, five hundred twenty-five".