18425396065 has 16 divisors (see below), whose sum is σ = 23610746880. Its totient is φ = 13772928960.

The previous prime is 18425396027. The next prime is 18425396081. The reversal of 18425396065 is 56069352481.

It is not a de Polignac number, because 18425396065 - 2²¹ = 18423298913 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2045049 + ... + 2054038.

It is an arithmetic number, because the mean of its divisors is an integer number (1475671680).

Almost surely, 2^18425396065 is an apocalyptic number.

It is an amenable number.

18425396065 is a deficient number, since it is larger than the sum of its proper divisors (5185350815).

18425396065 is a wasteful number, since it uses less digits than its factorization.

18425396065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099152.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 18425396065 in words is "eighteen billion, four hundred twenty-five million, three hundred ninety-six thousand, sixty-five".