1157195025 has 144 divisors (see below), whose sum is σ = 2519035200. Its totient is φ = 519160320.

The previous prime is 1157194979. The next prime is 1157195027. The reversal of 1157195025 is 5205917511.

1157195025 is a `hidden beast` number, since 11 + 571 + 9 + 50 + 25 = 666.

It is not a de Polignac number, because 1157195025 - 2⁹ = 1157194513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1157195027) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1951129 + ... + 1951721.

It is an arithmetic number, because the mean of its divisors is an integer number (17493300).

Almost surely, 2^1157195025 is an apocalyptic number.

1157195025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1157195025 is an abundant number, since it is smaller than the sum of its proper divisors (1361840175).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1157195025 is a wasteful number, since it uses less digits than its factorization.

1157195025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 36.

The square root of 1157195025 is about 34017.5693576128. The cubic root of 1157195025 is about 1049.8699839014.

The spelling of 1157195025 in words is "one billion, one hundred fifty-seven million, one hundred ninety-five thousand, twenty-five".