4225809781 has 4 divisors (see below), whose sum is σ = 4226044000. Its totient is φ = 4225575564.

The previous prime is 4225809761. The next prime is 4225809839. The reversal of 4225809781 is 1879085224.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4225809781 - 2²⁵ = 4192255349 is a prime.

It is a super-2 number, since 2×4225809781² = 35714936610390535922, which 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 (4225809761) 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, 87561 + ... + 126958.

It is an arithmetic number, because the mean of its divisors is an integer number (1056511000).

Almost surely, 2^4225809781 is an apocalyptic number.

It is an amenable number.

4225809781 is a deficient number, since it is larger than the sum of its proper divisors (234219).

4225809781 is a wasteful number, since it uses less digits than its factorization.

4225809781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234218.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 4225809781 is about 65006.2287861709. The cubic root of 4225809781 is about 1616.7268389030.

The spelling of 4225809781 in words is "four billion, two hundred twenty-five million, eight hundred nine thousand, seven hundred eighty-one".