1255440425 has 12 divisors (see below), whose sum is σ = 1567060416. Its totient is φ = 997698000.

The previous prime is 1255440419. The next prime is 1255440437. The reversal of 1255440425 is 5240445521.

It is not a de Polignac number, because 1255440425 - 2²⁸ = 987004969 is a prime.

It is a super-2 number, since 2×1255440425² = 3152261321448361250, 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 = 1255440391 and 1255440400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162509 + ... + 170058.

It is an arithmetic number, because the mean of its divisors is an integer number (130588368).

Almost surely, 2^1255440425 is an apocalyptic number.

It is an amenable number.

1255440425 is a deficient number, since it is larger than the sum of its proper divisors (311619991).

1255440425 is a wasteful number, since it uses less digits than its factorization.

1255440425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332728 (or 332723 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 1255440425 is about 35432.1947527951. The cubic root of 1255440425 is about 1078.7778885753. Note that the first 3 decimals are identical.

Adding to 1255440425 its reverse (5240445521), we get a palindrome (6495885946).

The spelling of 1255440425 in words is "one billion, two hundred fifty-five million, four hundred forty thousand, four hundred twenty-five".