425772216523 has 16 divisors (see below), whose sum is σ = 446695372800. Its totient is φ = 405051650784.

The previous prime is 425772216481. The next prime is 425772216533. The reversal of 425772216523 is 325612277524.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425772216523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425772216533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12308590 + ... + 12343132.

It is an arithmetic number, because the mean of its divisors is an integer number (27918460800).

Almost surely, 2^425772216523 is an apocalyptic number.

425772216523 is a deficient number, since it is larger than the sum of its proper divisors (20923156277).

425772216523 is a wasteful number, since it uses less digits than its factorization.

425772216523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37458.

The product of its digits is 1411200, while the sum is 46.

The spelling of 425772216523 in words is "four hundred twenty-five billion, seven hundred seventy-two million, two hundred sixteen thousand, five hundred twenty-three".