425665117 has 16 divisors (see below), whose sum is σ = 457994880. Its totient is φ = 394682112.

The previous prime is 425665099. The next prime is 425665139. The reversal of 425665117 is 711566524.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 425665117 - 2²⁷ = 291447389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425665147) 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, 96913 + ... + 101209.

It is an arithmetic number, because the mean of its divisors is an integer number (28624680).

Almost surely, 2^425665117 is an apocalyptic number.

It is an amenable number.

425665117 is a deficient number, since it is larger than the sum of its proper divisors (32329763).

425665117 is a wasteful number, since it uses less digits than its factorization.

425665117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452.

The product of its digits is 50400, while the sum is 37.

The square root of 425665117 is about 20631.6532783973. The cubic root of 425665117 is about 752.2393026367.

The spelling of 425665117 in words is "four hundred twenty-five million, six hundred sixty-five thousand, one hundred seventeen".