1425891717 has 12 divisors (see below), whose sum is σ = 2126061184. Its totient is φ = 919929960.

The previous prime is 1425891697. The next prime is 1425891721. The reversal of 1425891717 is 7171985241.

It is a happy number.

1425891717 is a `hidden beast` number, since 1 + 42 + 589 + 17 + 17 = 666.

It is not a de Polignac number, because 1425891717 - 2¹⁰ = 1425890693 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 (1425891757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2555083 + ... + 2555640.

Almost surely, 2^1425891717 is an apocalyptic number.

It is an amenable number.

1425891717 is a deficient number, since it is larger than the sum of its proper divisors (700169467).

1425891717 is a wasteful number, since it uses less digits than its factorization.

1425891717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5110760 (or 5110757 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The square root of 1425891717 is about 37760.9814093861. The cubic root of 1425891717 is about 1125.5432351242.

The spelling of 1425891717 in words is "one billion, four hundred twenty-five million, eight hundred ninety-one thousand, seven hundred seventeen".