25159109 has 2 divisors, whose sum is σ = 25159110. Its totient is φ = 25159108.

The previous prime is 25159049. The next prime is 25159129. The reversal of 25159109 is 90195152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12888100 + 12271009 = 3590^2 + 3503^2 .

It is a cyclic number.

It is not a de Polignac number, because 25159109 - 2²⁰ = 24110533 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 (25159129) 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, 12579554 + 12579555.

It is an arithmetic number, because the mean of its divisors is an integer number (12579555).

Almost surely, 2^25159109 is an apocalyptic number.

It is an amenable number.

25159109 is a deficient number, since it is larger than the sum of its proper divisors (1).

25159109 is an equidigital number, since it uses as much as digits as its factorization.

25159109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 25159109 is about 5015.8856645661. The cubic root of 25159109 is about 293.0207791994.

The spelling of 25159109 in words is "twenty-five million, one hundred fifty-nine thousand, one hundred nine".