1125395057 has 4 divisors (see below), whose sum is σ = 1146628980. Its totient is φ = 1104161136.

The previous prime is 1125395041. The next prime is 1125395059. The reversal of 1125395057 is 7505935211.

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 777796321 + 347598736 = 27889^2 + 18644^2 .

It is a cyclic number.

It is not a de Polignac number, because 1125395057 - 2⁴ = 1125395041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1125395057.

It is not an unprimeable number, because it can be changed into a prime (1125395059) 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, 10616882 + ... + 10616987.

It is an arithmetic number, because the mean of its divisors is an integer number (286657245).

Almost surely, 2^1125395057 is an apocalyptic number.

It is an amenable number.

1125395057 is a deficient number, since it is larger than the sum of its proper divisors (21233923).

1125395057 is an equidigital number, since it uses as much as digits as its factorization.

1125395057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21233922.

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 1125395057 is about 33546.9083076220. The cubic root of 1125395057 is about 1040.1636382673.

The spelling of 1125395057 in words is "one billion, one hundred twenty-five million, three hundred ninety-five thousand, fifty-seven".