1125553465 has 4 divisors (see below), whose sum is σ = 1350664164. Its totient is φ = 900442768.

The previous prime is 1125553453. The next prime is 1125553469. The reversal of 1125553465 is 5643555211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124970041 + 1000583424 = 11179^2 + 31632^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125553465 - 2⁵ = 1125553433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125553469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112555342 + ... + 112555351.

It is an arithmetic number, because the mean of its divisors is an integer number (337666041).

Almost surely, 2^1125553465 is an apocalyptic number.

It is an amenable number.

1125553465 is a deficient number, since it is larger than the sum of its proper divisors (225110699).

1125553465 is an equidigital number, since it uses as much as digits as its factorization.

1125553465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225110698.

The product of its digits is 90000, while the sum is 37.

The square root of 1125553465 is about 33549.2692170783. The cubic root of 1125553465 is about 1040.2124396520.

The spelling of 1125553465 in words is "one billion, one hundred twenty-five million, five hundred fifty-three thousand, four hundred sixty-five".