425017681 has 4 divisors (see below), whose sum is σ = 463655664. Its totient is φ = 386379700.

The previous prime is 425017679. The next prime is 425017687. The reversal of 425017681 is 186710524.

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 a cyclic number.

It is not a de Polignac number, because 425017681 - 2¹ = 425017679 is a prime.

It is a super-2 number, since 2×425017681² = 361280058325235522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (425017687) 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, 19318975 + ... + 19318996.

It is an arithmetic number, because the mean of its divisors is an integer number (115913916).

Almost surely, 2^425017681 is an apocalyptic number.

It is an amenable number.

425017681 is a deficient number, since it is larger than the sum of its proper divisors (38637983).

425017681 is a wasteful number, since it uses less digits than its factorization.

425017681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38637982.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 425017681 is about 20615.9569508670. The cubic root of 425017681 is about 751.8577241635.

The spelling of 425017681 in words is "four hundred twenty-five million, seventeen thousand, six hundred eighty-one".