425715795961 has 9 divisors (see below), whose sum is σ = 428389903749. Its totient is φ = 423058289724.

The previous prime is 425715795949. The next prime is 425715796019. The reversal of 425715795961 is 169597517524.

The square root of 425715795961 is 652469.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 425715795961 - 2¹¹ = 425715793913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 425715795961.

It is not an unprimeable number, because it can be changed into a prime (425715790961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 108960370 + ... + 108964276.

Almost surely, 2^425715795961 is an apocalyptic number.

425715795961 is the 652469-th square number.

425715795961 is the 326235-th centered octagonal number.

It is an amenable number.

425715795961 is a deficient number, since it is larger than the sum of its proper divisors (2674107788).

425715795961 is an frugal number, since it uses more digits than its factorization.

425715795961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8148 (or 4074 counting only the distinct ones).

The product of its digits is 23814000, while the sum is 61.

The spelling of 425715795961 in words is "four hundred twenty-five billion, seven hundred fifteen million, seven hundred ninety-five thousand, nine hundred sixty-one".