25272650209 has 2 divisors, whose sum is σ = 25272650210. Its totient is φ = 25272650208.

The previous prime is 25272650191. The next prime is 25272650219. The reversal of 25272650209 is 90205627252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23871795025 + 1400855184 = 154505^2 + 37428^2 .

It is a cyclic number.

It is not a de Polignac number, because 25272650209 - 2¹⁵ = 25272617441 is a prime.

It is not a weakly prime, because it can be changed into another prime (25272650219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12636325104 + 12636325105.

It is an arithmetic number, because the mean of its divisors is an integer number (12636325105).

Almost surely, 2^25272650209 is an apocalyptic number.

It is an amenable number.

25272650209 is a deficient number, since it is larger than the sum of its proper divisors (1).

25272650209 is an equidigital number, since it uses as much as digits as its factorization.

25272650209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 25272650209 in words is "twenty-five billion, two hundred seventy-two million, six hundred fifty thousand, two hundred nine".