25862392109 has 2 divisors, whose sum is σ = 25862392110. Its totient is φ = 25862392108.

The previous prime is 25862392099. The next prime is 25862392123. The reversal of 25862392109 is 90129326852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16346389609 + 9516002500 = 127853^2 + 97550^2 .

It is a cyclic number.

It is not a de Polignac number, because 25862392109 - 2⁸ = 25862391853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25862391109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12931196054 + 12931196055.

It is an arithmetic number, because the mean of its divisors is an integer number (12931196055).

Almost surely, 2^25862392109 is an apocalyptic number.

It is an amenable number.

25862392109 is a deficient number, since it is larger than the sum of its proper divisors (1).

25862392109 is an equidigital number, since it uses as much as digits as its factorization.

25862392109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 25862392109 in words is "twenty-five billion, eight hundred sixty-two million, three hundred ninety-two thousand, one hundred nine".