255225431 has 4 divisors (see below), whose sum is σ = 255266832. Its totient is φ = 255184032.

The previous prime is 255225427. The next prime is 255225473. The reversal of 255225431 is 134522552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255225431 - 2² = 255225427 is a prime.

It is a super-2 number, since 2×255225431² = 130280041258271522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255225394 and 255225403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255225401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9395 + ... + 24468.

It is an arithmetic number, because the mean of its divisors is an integer number (63816708).

Almost surely, 2^255225431 is an apocalyptic number.

255225431 is a deficient number, since it is larger than the sum of its proper divisors (41401).

255225431 is an equidigital number, since it uses as much as digits as its factorization.

255225431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41400.

The product of its digits is 12000, while the sum is 29.

The square root of 255225431 is about 15975.7763817600. The cubic root of 255225431 is about 634.3193823484.

Adding to 255225431 its reverse (134522552), we get a palindrome (389747983).

The spelling of 255225431 in words is "two hundred fifty-five million, two hundred twenty-five thousand, four hundred thirty-one".