25139774201 has 2 divisors, whose sum is σ = 25139774202. Its totient is φ = 25139774200.

The previous prime is 25139774189. The next prime is 25139774273. The reversal of 25139774201 is 10247793152.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24995293801 + 144480400 = 158099^2 + 12020^2 .

It is a cyclic number.

It is not a de Polignac number, because 25139774201 - 2³⁴ = 7959905017 is a prime.

It is not a weakly prime, because it can be changed into another prime (25139774701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12569887100 + 12569887101.

It is an arithmetic number, because the mean of its divisors is an integer number (12569887101).

Almost surely, 2^25139774201 is an apocalyptic number.

It is an amenable number.

25139774201 is a deficient number, since it is larger than the sum of its proper divisors (1).

25139774201 is an equidigital number, since it uses as much as digits as its factorization.

25139774201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 25139774201 in words is "twenty-five billion, one hundred thirty-nine million, seven hundred seventy-four thousand, two hundred one".