425771565 has 16 divisors (see below), whose sum is σ = 682458048. Its totient is φ = 226670336.

The previous prime is 425771557. The next prime is 425771573. The reversal of 425771565 is 565177524.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (425771557) and next prime (425771573).

It is a cyclic number.

It is not a de Polignac number, because 425771565 - 2³ = 425771557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16764 + ... + 33653.

It is an arithmetic number, because the mean of its divisors is an integer number (42653628).

Almost surely, 2^425771565 is an apocalyptic number.

It is an amenable number.

425771565 is a deficient number, since it is larger than the sum of its proper divisors (256686483).

425771565 is a wasteful number, since it uses less digits than its factorization.

425771565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50988.

The product of its digits is 294000, while the sum is 42.

The square root of 425771565 is about 20634.2328425362. The cubic root of 425771565 is about 752.3020027047.

The spelling of 425771565 in words is "four hundred twenty-five million, seven hundred seventy-one thousand, five hundred sixty-five".