4257215365 has 16 divisors (see below), whose sum is σ = 5502995568. Its totient is φ = 3143010816.

The previous prime is 4257215363. The next prime is 4257215377. The reversal of 4257215365 is 5635127524.

It can be written as a sum of positive squares in 8 ways, for example, as 386633569 + 3870581796 = 19663^2 + 62214^2 .

It is a cyclic number.

It is not a de Polignac number, because 4257215365 - 2¹ = 4257215363 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4257215363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484249 + ... + 492961.

It is an arithmetic number, because the mean of its divisors is an integer number (343937223).

Almost surely, 2^4257215365 is an apocalyptic number.

It is an amenable number.

4257215365 is a deficient number, since it is larger than the sum of its proper divisors (1245780203).

4257215365 is a wasteful number, since it uses less digits than its factorization.

4257215365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16248.

The product of its digits is 252000, while the sum is 40.

The square root of 4257215365 is about 65247.3399074629. The cubic root of 4257215365 is about 1620.7220483214.

The spelling of 4257215365 in words is "four billion, two hundred fifty-seven million, two hundred fifteen thousand, three hundred sixty-five".