25055213 has 2 divisors, whose sum is σ = 25055214. Its totient is φ = 25055212.

The previous prime is 25055209. The next prime is 25055231. The reversal of 25055213 is 31255052.

Together with next prime (25055231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16540489 + 8514724 = 4067^2 + 2918^2 .

It is a cyclic number.

It is not a de Polignac number, because 25055213 - 2² = 25055209 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25055203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12527606 + 12527607.

It is an arithmetic number, because the mean of its divisors is an integer number (12527607).

Almost surely, 2^25055213 is an apocalyptic number.

It is an amenable number.

25055213 is a deficient number, since it is larger than the sum of its proper divisors (1).

25055213 is an equidigital number, since it uses as much as digits as its factorization.

25055213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 25055213 is about 5005.5182548863. The cubic root of 25055213 is about 292.6168739365.

The spelling of 25055213 in words is "twenty-five million, fifty-five thousand, two hundred thirteen".