1255444057156 has 9 divisors (see below), whose sum is σ = 2197031021661. Its totient is φ = 627720908112.

The previous prime is 1255444057141. The next prime is 1255444057169. The reversal of 1255444057156 is 6517504445521.

It is a happy number.

The square root of 1255444057156 is 1120466.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1248918002500 + 6526054656 = 1117550^2 + 80784^2 .

It is a super-2 number, since 2×1255444057156² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1960816 + ... + 2521048.

Almost surely, 2^{1255444057156} is an apocalyptic number.

1255444057156 is the 1120466-th square number.

It is an amenable number.

1255444057156 is a deficient number, since it is larger than the sum of its proper divisors (941586964505).

1255444057156 is an frugal number, since it uses more digits than its factorization.

1255444057156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120470 (or 560235 counting only the distinct ones).

The product of its (nonzero) digits is 3360000, while the sum is 49.

Multiplying 1255444057156 by its sum of digits (49), we get a square (61516758800644 = 7843262²).

The spelling of 1255444057156 in words is "one trillion, two hundred fifty-five billion, four hundred forty-four million, fifty-seven thousand, one hundred fifty-six".