25702861139 has 2 divisors, whose sum is σ = 25702861140. Its totient is φ = 25702861138.

The previous prime is 25702861133. The next prime is 25702861193. The reversal of 25702861139 is 93116820752.

Together with next prime (25702861193) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25702861139 - 2¹² = 25702857043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25702861139.

It is not a weakly prime, because it can be changed into another prime (25702861133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12851430569 + 12851430570.

It is an arithmetic number, because the mean of its divisors is an integer number (12851430570).

Almost surely, 2^25702861139 is an apocalyptic number.

25702861139 is a deficient number, since it is larger than the sum of its proper divisors (1).

25702861139 is an equidigital number, since it uses as much as digits as its factorization.

25702861139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 25702861139 in words is "twenty-five billion, seven hundred two million, eight hundred sixty-one thousand, one hundred thirty-nine".