18764738048225 has 12 divisors (see below), whose sum is σ = 25058142501756. Its totient is φ = 13857037327680.

The previous prime is 18764738048219. The next prime is 18764738048237. The reversal of 18764738048225 is 52284083746781.

It can be written as a sum of positive squares in 6 ways, for example, as 2706028290001 + 16058709758224 = 1645001^2 + 4007332^2 .

It is not a de Polignac number, because 18764738048225 - 2¹⁰ = 18764738047201 is a prime.

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a Curzon number.

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, 28868827442 + ... + 28868828091.

It is an arithmetic number, because the mean of its divisors is an integer number (2088178541813).

Almost surely, 2^{18764738048225} is an apocalyptic number.

It is an amenable number.

18764738048225 is a deficient number, since it is larger than the sum of its proper divisors (6293404453531).

18764738048225 is a wasteful number, since it uses less digits than its factorization.

18764738048225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57737655556 (or 57737655551 counting only the distinct ones).

The product of its (nonzero) digits is 144506880, while the sum is 65.

The spelling of 18764738048225 in words is "eighteen trillion, seven hundred sixty-four billion, seven hundred thirty-eight million, forty-eight thousand, two hundred twenty-five".