1255040433 has 16 divisors (see below), whose sum is σ = 1860940800. Its totient is φ = 835963920.

The previous prime is 1255040429. The next prime is 1255040461. The reversal of 1255040433 is 3340405521.

1255040433 is a `hidden beast` number, since 1 + 255 + 0 + 404 + 3 + 3 = 666.

It is not a de Polignac number, because 1255040433 - 2² = 1255040429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1255040397 and 1255040406.

It is not an unprimeable number, because it can be changed into a prime (1255030433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12208 + ... + 51566.

It is an arithmetic number, because the mean of its divisors is an integer number (116308800).

Almost surely, 2^1255040433 is an apocalyptic number.

It is an amenable number.

1255040433 is a deficient number, since it is larger than the sum of its proper divisors (605900367).

1255040433 is a wasteful number, since it uses less digits than its factorization.

1255040433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40549 (or 40543 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1255040433 is about 35426.5498320116. The cubic root of 1255040433 is about 1078.6633077076.

Adding to 1255040433 its reverse (3340405521), we get a palindrome (4595445954).

The spelling of 1255040433 in words is "one billion, two hundred fifty-five million, forty thousand, four hundred thirty-three".