25390882109 has 16 divisors (see below), whose sum is σ = 26840305920. Its totient is φ = 23991888960.

The previous prime is 25390882093. The next prime is 25390882159. The reversal of 25390882109 is 90128809352.

It is a cyclic number.

It is not a de Polignac number, because 25390882109 - 2⁴ = 25390882093 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25390882159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107102 + ... + 249504.

It is an arithmetic number, because the mean of its divisors is an integer number (1677519120).

Almost surely, 2^25390882109 is an apocalyptic number.

It is an amenable number.

25390882109 is a deficient number, since it is larger than the sum of its proper divisors (1449423811).

25390882109 is a wasteful number, since it uses less digits than its factorization.

25390882109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142580.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 25390882109 in words is "twenty-five billion, three hundred ninety million, eight hundred eighty-two thousand, one hundred nine".