1165616425 has 12 divisors (see below), whose sum is σ = 1508207040. Its totient is φ = 891949520.

The previous prime is 1165616411. The next prime is 1165616447. The reversal of 1165616425 is 5246165611.

It is not a de Polignac number, because 1165616425 - 2⁷ = 1165616297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1013005 + ... + 1014154.

It is an arithmetic number, because the mean of its divisors is an integer number (125683920).

Almost surely, 2^1165616425 is an apocalyptic number.

It is an amenable number.

1165616425 is a deficient number, since it is larger than the sum of its proper divisors (342590615).

1165616425 is a wasteful number, since it uses less digits than its factorization.

1165616425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027192 (or 2027187 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 1165616425 is about 34141.1251279157. The cubic root of 1165616425 is about 1052.4106141048.

The spelling of 1165616425 in words is "one billion, one hundred sixty-five million, six hundred sixteen thousand, four hundred twenty-five".