25840832513 has 2 divisors, whose sum is σ = 25840832514. Its totient is φ = 25840832512.

The previous prime is 25840832461. The next prime is 25840832519. The reversal of 25840832513 is 31523804852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19102556944 + 6738275569 = 138212^2 + 82087^2 .

It is a cyclic number.

It is not a de Polignac number, because 25840832513 - 2¹⁴ = 25840816129 is a prime.

It is not a weakly prime, because it can be changed into another prime (25840832519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12920416256 + 12920416257.

It is an arithmetic number, because the mean of its divisors is an integer number (12920416257).

Almost surely, 2^25840832513 is an apocalyptic number.

It is an amenable number.

25840832513 is a deficient number, since it is larger than the sum of its proper divisors (1).

25840832513 is an equidigital number, since it uses as much as digits as its factorization.

25840832513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 25840832513 in words is "twenty-five billion, eight hundred forty million, eight hundred thirty-two thousand, five hundred thirteen".