1255363641 has 24 divisors (see below), whose sum is σ = 2098586880. Its totient is φ = 708267456.

The previous prime is 1255363607. The next prime is 1255363651. The reversal of 1255363641 is 1463635521.

1255363641 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 3 + 6 + 3 + 641 = 666.

It is not a de Polignac number, because 1255363641 - 2¹¹ = 1255361593 is a prime.

It is a super-2 number, since 2×1255363641² = 3151875742289553762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1255363596 and 1255363605.

It is not an unprimeable number, because it can be changed into a prime (1255363651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121140 + ... + 131093.

It is an arithmetic number, because the mean of its divisors is an integer number (87441120).

Almost surely, 2^1255363641 is an apocalyptic number.

It is an amenable number.

1255363641 is a deficient number, since it is larger than the sum of its proper divisors (843223239).

1255363641 is a wasteful number, since it uses less digits than its factorization.

1255363641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252325 (or 252322 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 1255363641 is about 35431.1112018802. Note that the first 3 decimals coincide. The cubic root of 1255363641 is about 1078.7558950798.

The spelling of 1255363641 in words is "one billion, two hundred fifty-five million, three hundred sixty-three thousand, six hundred forty-one".