425969817 has 32 divisors (see below), whose sum is σ = 707911680. Its totient is φ = 221832000.

The previous prime is 425969783. The next prime is 425969827. The reversal of 425969817 is 718969524.

It is not a de Polignac number, because 425969817 - 2²² = 421775513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425969817.

It is not an unprimeable number, because it can be changed into a prime (425969827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11692 + ... + 31442.

It is an arithmetic number, because the mean of its divisors is an integer number (22122240).

Almost surely, 2^425969817 is an apocalyptic number.

It is an amenable number.

425969817 is a deficient number, since it is larger than the sum of its proper divisors (281941863).

425969817 is a wasteful number, since it uses less digits than its factorization.

425969817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19853.

The product of its digits is 1088640, while the sum is 51.

The square root of 425969817 is about 20639.0362420342. The cubic root of 425969817 is about 752.4187493720.

The spelling of 425969817 in words is "four hundred twenty-five million, nine hundred sixty-nine thousand, eight hundred seventeen".