25197229 has 2 divisors, whose sum is σ = 25197230. Its totient is φ = 25197228.

The previous prime is 25197197. The next prime is 25197233. The reversal of 25197229 is 92279152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20912329 + 4284900 = 4573^2 + 2070^2 .

It is a cyclic number.

It is not a de Polignac number, because 25197229 - 2⁵ = 25197197 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 (25197299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12598614 + 12598615.

It is an arithmetic number, because the mean of its divisors is an integer number (12598615).

Almost surely, 2^25197229 is an apocalyptic number.

It is an amenable number.

25197229 is a deficient number, since it is larger than the sum of its proper divisors (1).

25197229 is an equidigital number, since it uses as much as digits as its factorization.

25197229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 25197229 is about 5019.6841534105. The cubic root of 25197229 is about 293.1686953469.

The spelling of 25197229 in words is "twenty-five million, one hundred ninety-seven thousand, two hundred twenty-nine".