1181159425 has 12 divisors (see below), whose sum is σ = 1478078140. Its totient is φ = 936256320.

The previous prime is 1181159387. The next prime is 1181159429. The reversal of 1181159425 is 5249511811.

It is a happy number.

It is a Cunningham number, because it is equal to 34368²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1 + 1181159424 = 1^2 + 34368^2 .

It is not a de Polignac number, because 1181159425 - 2²¹ = 1179062273 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1181159429) 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, 214002 + ... + 219451.

Almost surely, 2^1181159425 is an apocalyptic number.

It is an amenable number.

1181159425 is a deficient number, since it is larger than the sum of its proper divisors (296918715).

1181159425 is a wasteful number, since it uses less digits than its factorization.

1181159425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433572 (or 433567 counting only the distinct ones).

The product of its digits is 14400, while the sum is 37.

The square root of 1181159425 is about 34368.0000145484. Note that the first 4 decimals coincide. The cubic root of 1181159425 is about 1057.0677907453.

The spelling of 1181159425 in words is "one billion, one hundred eighty-one million, one hundred fifty-nine thousand, four hundred twenty-five".