25775213 has 4 divisors (see below), whose sum is σ = 27291420. Its totient is φ = 24259008.

The previous prime is 25775209. The next prime is 25775219. The reversal of 25775213 is 31257752.

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 15264649 + 10510564 = 3907^2 + 3242^2 .

It is a cyclic number.

It is not a de Polignac number, because 25775213 - 2² = 25775209 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 25775213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25775219) 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, 758078 + ... + 758111.

It is an arithmetic number, because the mean of its divisors is an integer number (6822855).

Almost surely, 2^25775213 is an apocalyptic number.

It is an amenable number.

25775213 is a deficient number, since it is larger than the sum of its proper divisors (1516207).

25775213 is a wasteful number, since it uses less digits than its factorization.

25775213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516206.

The product of its digits is 14700, while the sum is 32.

The square root of 25775213 is about 5076.9294854272. The cubic root of 25775213 is about 295.3933773404.

The spelling of 25775213 in words is "twenty-five million, seven hundred seventy-five thousand, two hundred thirteen".