1255224215838 has 64 divisors (see below), whose sum is σ = 2640311654400. Its totient is φ = 397055973600.

The previous prime is 1255224215827. The next prime is 1255224215849. The reversal of 1255224215838 is 8385124225521.

It is an interprime number because it is at equal distance from previous prime (1255224215827) and next prime (1255224215849).

It is a super-2 number, since 2×1255224215838² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27964113 + ... + 28008963.

It is an arithmetic number, because the mean of its divisors is an integer number (41254869600).

Almost surely, 2^{1255224215838} is an apocalyptic number.

1255224215838 is an abundant number, since it is smaller than the sum of its proper divisors (1385087438562).

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

1255224215838 is a wasteful number, since it uses less digits than its factorization.

1255224215838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46477.

The product of its digits is 1536000, while the sum is 48.

The spelling of 1255224215838 in words is "one trillion, two hundred fifty-five billion, two hundred twenty-four million, two hundred fifteen thousand, eight hundred thirty-eight".