1255279641 has 16 divisors (see below), whose sum is σ = 2086699008. Its totient is φ = 652093200.

The previous prime is 1255279637. The next prime is 1255279661. The reversal of 1255279641 is 1469725521.

It is not a de Polignac number, because 1255279641 - 2² = 1255279637 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1255279593 and 1255279602.

It is not an unprimeable number, because it can be changed into a prime (1255279661) 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, 2716825 + ... + 2717286.

It is an arithmetic number, because the mean of its divisors is an integer number (130418688).

Almost surely, 2^1255279641 is an apocalyptic number.

1255279641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1255279641 is a deficient number, since it is larger than the sum of its proper divisors (831419367).

1255279641 is a wasteful number, since it uses less digits than its factorization.

1255279641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434132.

The product of its digits is 151200, while the sum is 42.

The square root of 1255279641 is about 35429.9257831568. The cubic root of 1255279641 is about 1078.7318336542.

The spelling of 1255279641 in words is "one billion, two hundred fifty-five million, two hundred seventy-nine thousand, six hundred forty-one".