4425027781 has 4 divisors (see below), whose sum is σ = 4657924000. Its totient is φ = 4192131564.

The previous prime is 4425027701. The next prime is 4425027811. The reversal of 4425027781 is 1877205244.

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 4425027781 - 2⁷ = 4425027653 is a prime.

It is a super-2 number, since 2×4425027781² = 39161741725243567922, 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 (4425027701) 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, 116448081 + ... + 116448118.

It is an arithmetic number, because the mean of its divisors is an integer number (1164481000).

Almost surely, 2^4425027781 is an apocalyptic number.

4425027781 is the 42072-nd centered pentagonal number.

It is an amenable number.

4425027781 is a deficient number, since it is larger than the sum of its proper divisors (232896219).

4425027781 is a wasteful number, since it uses less digits than its factorization.

4425027781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232896218.

The product of its (nonzero) digits is 125440, while the sum is 40.

The square root of 4425027781 is about 66520.8822927056. The cubic root of 4425027781 is about 1641.7436072379.

The spelling of 4425027781 in words is "four billion, four hundred twenty-five million, twenty-seven thousand, seven hundred eighty-one".