1255319144 has 16 divisors (see below), whose sum is σ = 2355682020. Its totient is φ = 627137280.

The previous prime is 1255319137. The next prime is 1255319171. The reversal of 1255319144 is 4419135521.

It can be written as a sum of positive squares in 2 ways, for example, as 1208396644 + 46922500 = 34762^2 + 6850^2 .

It is a super-3 number, since 3×1255319144³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54977 + ... + 74384.

Almost surely, 2^1255319144 is an apocalyptic number.

It is an amenable number.

1255319144 is a deficient number, since it is larger than the sum of its proper divisors (1100362876).

1255319144 is a wasteful number, since it uses less digits than its factorization.

1255319144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130580 (or 130576 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 1255319144 is about 35430.4832594759. The cubic root of 1255319144 is about 1078.7431492462.

The spelling of 1255319144 in words is "one billion, two hundred fifty-five million, three hundred nineteen thousand, one hundred forty-four".