425711917 has 4 divisors (see below), whose sum is σ = 425774556. Its totient is φ = 425649280.

The previous prime is 425711861. The next prime is 425711921. The reversal of 425711917 is 719117524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 170798761 + 254913156 = 13069^2 + 15966^2 .

It is a cyclic number.

It is not a de Polignac number, because 425711917 - 2⁷ = 425711789 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 (425711927) 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, 19684 + ... + 35197.

It is an arithmetic number, because the mean of its divisors is an integer number (106443639).

Almost surely, 2^425711917 is an apocalyptic number.

It is an amenable number.

425711917 is a deficient number, since it is larger than the sum of its proper divisors (62639).

425711917 is an equidigital number, since it uses as much as digits as its factorization.

425711917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62638.

The product of its digits is 17640, while the sum is 37.

The square root of 425711917 is about 20632.7874268117. The cubic root of 425711917 is about 752.2668700896.

The spelling of 425711917 in words is "four hundred twenty-five million, seven hundred eleven thousand, nine hundred seventeen".