425424345109 has 4 divisors (see below), whose sum is σ = 450449306604. Its totient is φ = 400399383616.

The previous prime is 425424345091. The next prime is 425424345193. The reversal of 425424345109 is 901543424524.

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 338814798084 + 86609547025 = 582078^2 + 294295^2 .

It is a cyclic number.

It is not a de Polignac number, because 425424345109 - 2¹⁷ = 425424214037 is a prime.

It is a super-2 number, since 2×425424345109² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425424445109) 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, 12512480722 + ... + 12512480755.

It is an arithmetic number, because the mean of its divisors is an integer number (112612326651).

Almost surely, 2^425424345109 is an apocalyptic number.

It is an amenable number.

425424345109 is a deficient number, since it is larger than the sum of its proper divisors (25024961495).

425424345109 is a wasteful number, since it uses less digits than its factorization.

425424345109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25024961494.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 425424345109 in words is "four hundred twenty-five billion, four hundred twenty-four million, three hundred forty-five thousand, one hundred nine".