25206213 has 16 divisors (see below), whose sum is σ = 35326016. Its totient is φ = 15966720.

The previous prime is 25206197. The next prime is 25206277. The reversal of 25206213 is 31260252.

It is not a de Polignac number, because 25206213 - 2⁴ = 25206197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25206213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25206283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2133 + ... + 7413.

It is an arithmetic number, because the mean of its divisors is an integer number (2207876).

Almost surely, 2^25206213 is an apocalyptic number.

It is an amenable number.

25206213 is a deficient number, since it is larger than the sum of its proper divisors (10119803).

25206213 is a wasteful number, since it uses less digits than its factorization.

25206213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5364.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 25206213 is about 5020.5789506789. The cubic root of 25206213 is about 293.2035340269.

Adding to 25206213 its reverse (31260252), we get a palindrome (56466465).

The spelling of 25206213 in words is "twenty-five million, two hundred six thousand, two hundred thirteen".