2155272725512 has 8 divisors (see below), whose sum is σ = 4041136360350. Its totient is φ = 1077636362752.

The previous prime is 2155272725509. The next prime is 2155272725513.

2155272725512 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 2081019745476 + 74252980036 = 1442574^2 + 272494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2155272725513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134704545337 + ... + 134704545352.

Almost surely, 2^{2155272725512} is an apocalyptic number.

It is an amenable number.

2155272725512 is a deficient number, since it is larger than the sum of its proper divisors (1885863634838).

2155272725512 is a wasteful number, since it uses less digits than its factorization.

2155272725512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269409090695 (or 269409090691 counting only the distinct ones).

The product of its digits is 980000, while the sum is 46.

The spelling of 2155272725512 in words is "two trillion, one hundred fifty-five billion, two hundred seventy-two million, seven hundred twenty-five thousand, five hundred twelve".