8425213 has 4 divisors (see below), whose sum is σ = 8630748. Its totient is φ = 8219680.

The previous prime is 8425187. The next prime is 8425237. The reversal of 8425213 is 3125248.

8425213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1258884 + 7166329 = 1122^2 + 2677^2 .

It is not a de Polignac number, because 8425213 - 2⁵ = 8425181 is a prime.

It is a d-powerful number, because it can be written as 8³ + 4⁷ + 2²² + 5² + 2²² + 1 + 3⁹ .

It is a Duffinian number.

8425213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8425243) 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, 102706 + ... + 102787.

It is an arithmetic number, because the mean of its divisors is an integer number (2157687).

Almost surely, 2^8425213 is an apocalyptic number.

It is an amenable number.

8425213 is a deficient number, since it is larger than the sum of its proper divisors (205535).

8425213 is a wasteful number, since it uses less digits than its factorization.

8425213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205534.

The product of its digits is 1920, while the sum is 25.

The square root of 8425213 is about 2902.6217459393. The cubic root of 8425213 is about 203.4824523502.

The spelling of 8425213 in words is "eight million, four hundred twenty-five thousand, two hundred thirteen".