1818373577825 has 24 divisors (see below), whose sum is σ = 2688934051968. Its totient is φ = 1192672356480.

The previous prime is 1818373577803. The next prime is 1818373577833. The reversal of 1818373577825 is 5287753738181.

It is not a de Polignac number, because 1818373577825 - 2⁸ = 1818373577569 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225880892 + ... + 225888941.

It is an arithmetic number, because the mean of its divisors is an integer number (112038918832).

Almost surely, 2^{1818373577825} is an apocalyptic number.

It is an amenable number.

1818373577825 is a deficient number, since it is larger than the sum of its proper divisors (870560474143).

1818373577825 is a wasteful number, since it uses less digits than its factorization.

1818373577825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451769873 (or 451769868 counting only the distinct ones).

The product of its digits is 79027200, while the sum is 65.

The spelling of 1818373577825 in words is "one trillion, eight hundred eighteen billion, three hundred seventy-three million, five hundred seventy-seven thousand, eight hundred twenty-five".