255013402001261 has 2 divisors, whose sum is σ = 255013402001262. Its totient is φ = 255013402001260.

The previous prime is 255013402001257. The next prime is 255013402001333. The reversal of 255013402001261 is 162100204310552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174243458417161 + 80769943584100 = 13200131^2 + 8987210^2 .

It is a cyclic number.

It is not a de Polignac number, because 255013402001261 - 2² = 255013402001257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255013452001261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127506701000630 + 127506701000631.

It is an arithmetic number, because the mean of its divisors is an integer number (127506701000631).

Almost surely, 2^{255013402001261} is an apocalyptic number.

It is an amenable number.

255013402001261 is a deficient number, since it is larger than the sum of its proper divisors (1).

255013402001261 is an equidigital number, since it uses as much as digits as its factorization.

255013402001261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 255013402001261 in words is "two hundred fifty-five trillion, thirteen billion, four hundred two million, one thousand, two hundred sixty-one".