425437810605 has 24 divisors (see below), whose sum is σ = 780803512632. Its totient is φ = 213553096704.

The previous prime is 425437810597. The next prime is 425437810613. The reversal of 425437810605 is 506018734524.

425437810605 is a `hidden beast` number, since 4 + 2 + 5 + 4 + 37 + 8 + 1 + 0 + 605 = 666.

It is an interprime number because it is at equal distance from previous prime (425437810597) and next prime (425437810613).

It can be written as a sum of positive squares in 4 ways, for example, as 166654998756 + 258782811849 = 408234^2 + 508707^2 .

It is not a de Polignac number, because 425437810605 - 2³ = 425437810597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278063164 + ... + 278064693.

It is an arithmetic number, because the mean of its divisors is an integer number (32533479693).

Almost surely, 2^425437810605 is an apocalyptic number.

425437810605 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

425437810605 is a deficient number, since it is larger than the sum of its proper divisors (355365702027).

425437810605 is a wasteful number, since it uses less digits than its factorization.

425437810605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556127885 (or 556127882 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 425437810605 in words is "four hundred twenty-five billion, four hundred thirty-seven million, eight hundred ten thousand, six hundred five".