255015150421 has 2 divisors, whose sum is σ = 255015150422. Its totient is φ = 255015150420.

The previous prime is 255015150409. The next prime is 255015150461. The reversal of 255015150421 is 124051510552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253526348196 + 1488802225 = 503514^2 + 38585^2 .

It is a cyclic number.

It is not a de Polignac number, because 255015150421 - 2¹¹ = 255015148373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255015150461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127507575210 + 127507575211.

It is an arithmetic number, because the mean of its divisors is an integer number (127507575211).

Almost surely, 2^255015150421 is an apocalyptic number.

It is an amenable number.

255015150421 is a deficient number, since it is larger than the sum of its proper divisors (1).

255015150421 is an equidigital number, since it uses as much as digits as its factorization.

255015150421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10000, while the sum is 31.

Adding to 255015150421 its reverse (124051510552), we get a palindrome (379066660973).

The spelling of 255015150421 in words is "two hundred fifty-five billion, fifteen million, one hundred fifty thousand, four hundred twenty-one".