25546752013 has 2 divisors, whose sum is σ = 25546752014. Its totient is φ = 25546752012.

The previous prime is 25546751999. The next prime is 25546752031. The reversal of 25546752013 is 31025764552.

Together with next prime (25546752031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20793063204 + 4753688809 = 144198^2 + 68947^2 .

It is a cyclic number.

It is not a de Polignac number, because 25546752013 - 2⁹ = 25546751501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25546752113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12773376006 + 12773376007.

It is an arithmetic number, because the mean of its divisors is an integer number (12773376007).

Almost surely, 2^25546752013 is an apocalyptic number.

It is an amenable number.

25546752013 is a deficient number, since it is larger than the sum of its proper divisors (1).

25546752013 is an equidigital number, since it uses as much as digits as its factorization.

25546752013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 25546752013 in words is "twenty-five billion, five hundred forty-six million, seven hundred fifty-two thousand, thirteen".