1161525045 has 32 divisors (see below), whose sum is σ = 1891628928. Its totient is φ = 608514048.

The previous prime is 1161525041. The next prime is 1161525049. The reversal of 1161525045 is 5405251611.

It is an interprime number because it is at equal distance from previous prime (1161525041) and next prime (1161525049).

It is not a de Polignac number, because 1161525045 - 2² = 1161525041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161525041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196422 + ... + 202248.

It is an arithmetic number, because the mean of its divisors is an integer number (59113404).

Almost surely, 2^1161525045 is an apocalyptic number.

1161525045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161525045 is a deficient number, since it is larger than the sum of its proper divisors (730103883).

1161525045 is a wasteful number, since it uses less digits than its factorization.

1161525045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1161525045 is about 34081.1538096937. The cubic root of 1161525045 is about 1051.1778302106.

Adding to 1161525045 its reverse (5405251611), we get a palindrome (6566776656).

The spelling of 1161525045 in words is "one billion, one hundred sixty-one million, five hundred twenty-five thousand, forty-five".