255020407 has 2 divisors, whose sum is σ = 255020408. Its totient is φ = 255020406.

The previous prime is 255020393. The next prime is 255020419. The reversal of 255020407 is 704020552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255020407 - 2⁷ = 255020279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255020107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127510203 + 127510204.

It is an arithmetic number, because the mean of its divisors is an integer number (127510204).

Almost surely, 2^255020407 is an apocalyptic number.

255020407 is a deficient number, since it is larger than the sum of its proper divisors (1).

255020407 is an equidigital number, since it uses as much as digits as its factorization.

255020407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 255020407 is about 15969.3583778435. The cubic root of 255020407 is about 634.1494860917.

Adding to 255020407 its reverse (704020552), we get a palindrome (959040959).

The spelling of 255020407 in words is "two hundred fifty-five million, twenty thousand, four hundred seven".