425106709 has 4 divisors (see below), whose sum is σ = 450113004. Its totient is φ = 400100416.

The previous prime is 425106701. The next prime is 425106733. The reversal of 425106709 is 907601524.

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 178302609 + 246804100 = 13353^2 + 15710^2 .

It is a cyclic number.

It is not a de Polignac number, because 425106709 - 2³ = 425106701 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 (425106701) 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, 12503122 + ... + 12503155.

It is an arithmetic number, because the mean of its divisors is an integer number (112528251).

Almost surely, 2^425106709 is an apocalyptic number.

It is an amenable number.

425106709 is a deficient number, since it is larger than the sum of its proper divisors (25006295).

425106709 is a wasteful number, since it uses less digits than its factorization.

425106709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25006294.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 425106709 is about 20618.1160390565. The cubic root of 425106709 is about 751.9102174434.

The spelling of 425106709 in words is "four hundred twenty-five million, one hundred six thousand, seven hundred nine".