1255863450 has 24 divisors (see below), whose sum is σ = 3114541728. Its totient is φ = 334896880.

The previous prime is 1255863449. The next prime is 1255863451. The reversal of 1255863450 is 543685521.

It is an interprime number because it is at equal distance from previous prime (1255863449) and next prime (1255863451).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1255863399 and 1255863408.

It is not an unprimeable number, because it can be changed into a prime (1255863451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4186062 + ... + 4186361.

It is an arithmetic number, because the mean of its divisors is an integer number (129772572).

Almost surely, 2^1255863450 is an apocalyptic number.

1255863450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255863450 is an abundant number, since it is smaller than the sum of its proper divisors (1858678278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255863450 is a wasteful number, since it uses less digits than its factorization.

1255863450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8372438 (or 8372433 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 1255863450 is about 35438.1637503977. The cubic root of 1255863450 is about 1078.8990409509.

The spelling of 1255863450 in words is "one billion, two hundred fifty-five million, eight hundred sixty-three thousand, four hundred fifty".