18462740825 has 12 divisors (see below), whose sum is σ = 22901032380. Its totient is φ = 14765525760.

The previous prime is 18462740771. The next prime is 18462740869. The reversal of 18462740825 is 52804726481.

It can be written as a sum of positive squares in 6 ways, for example, as 20286016 + 18442454809 = 4504^2 + 135803^2 .

It is not a de Polignac number, because 18462740825 - 2¹⁶ = 18462675289 is a prime.

It is a super-2 number, since 2×18462740825² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18462740825.

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, 34844 + ... + 195293.

It is an arithmetic number, because the mean of its divisors is an integer number (1908419365).

Almost surely, 2^18462740825 is an apocalyptic number.

It is an amenable number.

18462740825 is a deficient number, since it is larger than the sum of its proper divisors (4438291555).

18462740825 is a wasteful number, since it uses less digits than its factorization.

18462740825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233356 (or 233351 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 18462740825 in words is "eighteen billion, four hundred sixty-two million, seven hundred forty thousand, eight hundred twenty-five".