1816120736625 has 32 divisors (see below), whose sum is σ = 3254488368768. Its totient is φ = 894090206400.

The previous prime is 1816120736587. The next prime is 1816120736711. The reversal of 1816120736625 is 5266370216181.

It is not a de Polignac number, because 1816120736625 - 2¹⁰ = 1816120735601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186263919 + ... + 186273668.

It is an arithmetic number, because the mean of its divisors is an integer number (101702761524).

Almost surely, 2^{1816120736625} is an apocalyptic number.

1816120736625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1816120736625 is a deficient number, since it is larger than the sum of its proper divisors (1438367632143).

1816120736625 is a wasteful number, since it uses less digits than its factorization.

1816120736625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372537618 (or 372537608 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 1816120736625 in words is "one trillion, eight hundred sixteen billion, one hundred twenty million, seven hundred thirty-six thousand, six hundred twenty-five".