819142661325 has 12 divisors (see below), whose sum is σ = 1354315866848. Its totient is φ = 436876086000.

The previous prime is 819142661317. The next prime is 819142661333. The reversal of 819142661325 is 523166241918.

It is an interprime number because it is at equal distance from previous prime (819142661317) and next prime (819142661333).

It is not a de Polignac number, because 819142661325 - 2³ = 819142661317 is a prime.

It is a Duffinian number.

It is a congruent 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, 5460951001 + ... + 5460951150.

Almost surely, 2^819142661325 is an apocalyptic number.

It is an amenable number.

819142661325 is a deficient number, since it is larger than the sum of its proper divisors (535173205523).

819142661325 is a wasteful number, since it uses less digits than its factorization.

819142661325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10921902164 (or 10921902159 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The spelling of 819142661325 in words is "eight hundred nineteen billion, one hundred forty-two million, six hundred sixty-one thousand, three hundred twenty-five".