255223520137 has 2 divisors, whose sum is σ = 255223520138. Its totient is φ = 255223520136.

The previous prime is 255223520107. The next prime is 255223520179. The reversal of 255223520137 is 731025322552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181187286921 + 74036233216 = 425661^2 + 272096^2 .

It is a cyclic number.

It is not a de Polignac number, because 255223520137 - 2¹⁹ = 255222995849 is a prime.

It is a super-2 number, since 2×255223520137² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 255223520096 and 255223520105.

It is not a weakly prime, because it can be changed into another prime (255223520107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127611760068 + 127611760069.

It is an arithmetic number, because the mean of its divisors is an integer number (127611760069).

Almost surely, 2^255223520137 is an apocalyptic number.

It is an amenable number.

255223520137 is a deficient number, since it is larger than the sum of its proper divisors (1).

255223520137 is an equidigital number, since it uses as much as digits as its factorization.

255223520137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 37.

Adding to 255223520137 its reverse (731025322552), we get a palindrome (986248842689).

The spelling of 255223520137 in words is "two hundred fifty-five billion, two hundred twenty-three million, five hundred twenty thousand, one hundred thirty-seven".