425162217 has 4 divisors (see below), whose sum is σ = 566882960. Its totient is φ = 283441476.

The previous prime is 425162189. The next prime is 425162249. The reversal of 425162217 is 712261524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 425162217 - 2¹⁰ = 425161193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425162317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70860367 + ... + 70860372.

It is an arithmetic number, because the mean of its divisors is an integer number (141720740).

Almost surely, 2^425162217 is an apocalyptic number.

It is an amenable number.

425162217 is a deficient number, since it is larger than the sum of its proper divisors (141720743).

425162217 is a wasteful number, since it uses less digits than its factorization.

425162217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141720742.

The product of its digits is 6720, while the sum is 30.

The square root of 425162217 is about 20619.4620928869. The cubic root of 425162217 is about 751.9429427294.

The spelling of 425162217 in words is "four hundred twenty-five million, one hundred sixty-two thousand, two hundred seventeen".