1516565425 has 12 divisors (see below), whose sum is σ = 1881259056. Its totient is φ = 1212789200.

The previous prime is 1516565423. The next prime is 1516565447. The reversal of 1516565425 is 5245656151.

It is not a de Polignac number, because 1516565425 - 2¹ = 1516565423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1516565423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65202 + ... + 85348.

It is an arithmetic number, because the mean of its divisors is an integer number (156771588).

Almost surely, 2^1516565425 is an apocalyptic number.

It is an amenable number.

1516565425 is a deficient number, since it is larger than the sum of its proper divisors (364693631).

1516565425 is a wasteful number, since it uses less digits than its factorization.

1516565425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23168 (or 23163 counting only the distinct ones).

The product of its digits is 180000, while the sum is 40.

The square root of 1516565425 is about 38943.1049737948. The cubic root of 1516565425 is about 1148.9127531242.

The spelling of 1516565425 in words is "one billion, five hundred sixteen million, five hundred sixty-five thousand, four hundred twenty-five".