255242425 has 12 divisors (see below), whose sum is σ = 324221436. Its totient is φ = 199212800.

The previous prime is 255242417. The next prime is 255242461. The reversal of 255242425 is 524242552.

It can be written as a sum of positive squares in 6 ways, for example, as 393129 + 254849296 = 627^2 + 15964^2 .

It is not a de Polignac number, because 255242425 - 2³ = 255242417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123484 + ... + 125533.

It is an arithmetic number, because the mean of its divisors is an integer number (27018453).

Almost surely, 2^255242425 is an apocalyptic number.

255242425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255242425 is a deficient number, since it is larger than the sum of its proper divisors (68979011).

255242425 is a wasteful number, since it uses less digits than its factorization.

255242425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249068 (or 249063 counting only the distinct ones).

The product of its digits is 32000, while the sum is 31.

The square root of 255242425 is about 15976.3082406418. The cubic root of 255242425 is about 634.3334606011. Note that the first 3 decimals are identical.

Adding to 255242425 its reverse (524242552), we get a palindrome (779484977).

The spelling of 255242425 in words is "two hundred fifty-five million, two hundred forty-two thousand, four hundred twenty-five".