1157817025 has 12 divisors (see below), whose sum is σ = 1485200700. Its totient is φ = 894313280.

The previous prime is 1157816983. The next prime is 1157817029. The reversal of 1157817025 is 5207187511.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 127599616 + 1030217409 = 11296^2 + 32097^2 .

It is not a de Polignac number, because 1157817025 - 2⁷ = 1157816897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1157817029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 797770 + ... + 799219.

It is an arithmetic number, because the mean of its divisors is an integer number (123766725).

Almost surely, 2^1157817025 is an apocalyptic number.

It is an amenable number.

1157817025 is a deficient number, since it is larger than the sum of its proper divisors (327383675).

1157817025 is a wasteful number, since it uses less digits than its factorization.

1157817025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597028 (or 1597023 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 37.

The square root of 1157817025 is about 34026.7104639870. The cubic root of 1157817025 is about 1050.0580542353.

The spelling of 1157817025 in words is "one billion, one hundred fifty-seven million, eight hundred seventeen thousand, twenty-five".