255223520477 has 2 divisors, whose sum is σ = 255223520478. Its totient is φ = 255223520476.

The previous prime is 255223520411. The next prime is 255223520491. The reversal of 255223520477 is 774025322552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247754067001 + 7469453476 = 497749^2 + 86426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255223520477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255223520077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127611760238 + 127611760239.

It is an arithmetic number, because the mean of its divisors is an integer number (127611760239).

Almost surely, 2^255223520477 is an apocalyptic number.

It is an amenable number.

255223520477 is a deficient number, since it is larger than the sum of its proper divisors (1).

255223520477 is an equidigital number, since it uses as much as digits as its factorization.

255223520477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176000, while the sum is 44.

The spelling of 255223520477 in words is "two hundred fifty-five billion, two hundred twenty-three million, five hundred twenty thousand, four hundred seventy-seven".