25504201 has 2 divisors, whose sum is σ = 25504202. Its totient is φ = 25504200.

The previous prime is 25504189. The next prime is 25504207. The reversal of 25504201 is 10240552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14288400 + 11215801 = 3780^2 + 3349^2 .

It is a cyclic number.

It is not a de Polignac number, because 25504201 - 2²¹ = 23407049 is a prime.

It is not a weakly prime, because it can be changed into another prime (25504207) 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 as a sum of consecutive naturals, namely, 12752100 + 12752101.

It is an arithmetic number, because the mean of its divisors is an integer number (12752101).

Almost surely, 2^25504201 is an apocalyptic number.

It is an amenable number.

25504201 is a deficient number, since it is larger than the sum of its proper divisors (1).

25504201 is an equidigital number, since it uses as much as digits as its factorization.

25504201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 25504201 is about 5050.1684130334. The cubic root of 25504201 is about 294.3544285521.

Adding to 25504201 its reverse (10240552), we get a palindrome (35744753).

The spelling of 25504201 in words is "twenty-five million, five hundred four thousand, two hundred one".