27625026257 has 2 divisors, whose sum is σ = 27625026258. Its totient is φ = 27625026256.

The previous prime is 27625026179. The next prime is 27625026271. The reversal of 27625026257 is 75262052672.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27623769616 + 1256641 = 166204^2 + 1121^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27625026257 is a prime.

It is not a weakly prime, because it can be changed into another prime (27625026557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13812513128 + 13812513129.

It is an arithmetic number, because the mean of its divisors is an integer number (13812513129).

Almost surely, 2^27625026257 is an apocalyptic number.

It is an amenable number.

27625026257 is a deficient number, since it is larger than the sum of its proper divisors (1).

27625026257 is an equidigital number, since it uses as much as digits as its factorization.

27625026257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 27625026257 in words is "twenty-seven billion, six hundred twenty-five million, twenty-six thousand, two hundred fifty-seven".