1255075605138 has 16 divisors (see below), whose sum is σ = 2512220599296. Its totient is φ = 418013636880.

The previous prime is 1255075605131. The next prime is 1255075605151. The reversal of 1255075605138 is 8315065705521.

It is a super-2 number, since 2×1255075605138² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255075605131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86216658 + ... + 86231213.

It is an arithmetic number, because the mean of its divisors is an integer number (157013787456).

Almost surely, 2^{1255075605138} is an apocalyptic number.

1255075605138 is an abundant number, since it is smaller than the sum of its proper divisors (1257144994158).

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

1255075605138 is a wasteful number, since it uses less digits than its factorization.

1255075605138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172449089.

The product of its (nonzero) digits is 1260000, while the sum is 48.

The spelling of 1255075605138 in words is "one trillion, two hundred fifty-five billion, seventy-five million, six hundred five thousand, one hundred thirty-eight".