1255440003 has 8 divisors (see below), whose sum is σ = 1680590016. Its totient is φ = 833625000.

The previous prime is 1255440001. The next prime is 1255440013. The reversal of 1255440003 is 3000445521.

1255440003 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1255440003 - 2¹ = 1255440001 is a prime.

It is a super-2 number, since 2×1255440003² = 3152259202265280018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255440001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832873 + ... + 834378.

It is an arithmetic number, because the mean of its divisors is an integer number (210073752).

Almost surely, 2^1255440003 is an apocalyptic number.

1255440003 is a deficient number, since it is larger than the sum of its proper divisors (425150013).

1255440003 is a wasteful number, since it uses less digits than its factorization.

1255440003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667505.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1255440003 is about 35432.1887977585. The cubic root of 1255440003 is about 1078.7777677029. Note that the first 4 decimals are identical.

Adding to 1255440003 its reverse (3000445521), we get a palindrome (4255885524).

The spelling of 1255440003 in words is "one billion, two hundred fifty-five million, four hundred forty thousand, three".