4427405257 has 4 divisors (see below), whose sum is σ = 4829896656. Its totient is φ = 4024913860.

The previous prime is 4427405239. The next prime is 4427405329. The reversal of 4427405257 is 7525047244.

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 not a de Polignac number, because 4427405257 - 2²⁷ = 4293187529 is a prime.

It is a super-2 number, since 2×4427405257² = 39203834619422472098, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4427405057) 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, 201245683 + ... + 201245704.

It is an arithmetic number, because the mean of its divisors is an integer number (1207474164).

Almost surely, 2^4427405257 is an apocalyptic number.

It is an amenable number.

4427405257 is a deficient number, since it is larger than the sum of its proper divisors (402491399).

4427405257 is a wasteful number, since it uses less digits than its factorization.

4427405257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402491398.

The product of its (nonzero) digits is 313600, while the sum is 40.

The square root of 4427405257 is about 66538.7500408596. The cubic root of 4427405257 is about 1642.0375795690.

The spelling of 4427405257 in words is "four billion, four hundred twenty-seven million, four hundred five thousand, two hundred fifty-seven".