1255727026158 has 32 divisors (see below), whose sum is σ = 2739834761472. Its totient is φ = 380514076800.

The previous prime is 1255727026111. The next prime is 1255727026159. The reversal of 1255727026158 is 8516207275521.

It is a super-2 number, since 2×1255727026158² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1255727026158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255727026159) 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, 2797663 + ... + 3215333.

It is an arithmetic number, because the mean of its divisors is an integer number (85619836296).

Almost surely, 2^{1255727026158} is an apocalyptic number.

1255727026158 is an abundant number, since it is smaller than the sum of its proper divisors (1484107735314).

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

1255727026158 is a wasteful number, since it uses less digits than its factorization.

1255727026158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463240.

The product of its (nonzero) digits is 2352000, while the sum is 51.

The spelling of 1255727026158 in words is "one trillion, two hundred fifty-five billion, seven hundred twenty-seven million, twenty-six thousand, one hundred fifty-eight".