4223251781 has 8 divisors (see below), whose sum is σ = 4944295104. Its totient is φ = 3531638880.

The previous prime is 4223251687. The next prime is 4223251783. The reversal of 4223251781 is 1871523224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4223251781 - 2¹⁴ = 4223235397 is a prime.

It is a super-2 number, since 2×4223251781² = 35671711211439343922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223251783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7357295 + ... + 7357868.

It is an arithmetic number, because the mean of its divisors is an integer number (618036888).

Almost surely, 2^4223251781 is an apocalyptic number.

4223251781 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4223251781 is a deficient number, since it is larger than the sum of its proper divisors (721043323).

4223251781 is a wasteful number, since it uses less digits than its factorization.

4223251781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14715211.

The product of its digits is 26880, while the sum is 35.

The square root of 4223251781 is about 64986.5507701401. The cubic root of 4223251781 is about 1616.4005565089.

The spelling of 4223251781 in words is "four billion, two hundred twenty-three million, two hundred fifty-one thousand, seven hundred eighty-one".