1255201144 has 8 divisors (see below), whose sum is σ = 2353502160. Its totient is φ = 627600568.

The previous prime is 1255201139. The next prime is 1255201147. The reversal of 1255201144 is 4411025521.

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

It is a super-3 number, since 3×1255201144³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255201147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78450064 + ... + 78450079.

It is an arithmetic number, because the mean of its divisors is an integer number (294187770).

Almost surely, 2^1255201144 is an apocalyptic number.

It is an amenable number.

1255201144 is a deficient number, since it is larger than the sum of its proper divisors (1098301016).

1255201144 is a wasteful number, since it uses less digits than its factorization.

1255201144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156900149 (or 156900145 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1255201144 is about 35428.8179876213. The cubic root of 1255201144 is about 1078.7093475682.

Adding to 1255201144 its reverse (4411025521), we get a palindrome (5666226665).

The spelling of 1255201144 in words is "one billion, two hundred fifty-five million, two hundred one thousand, one hundred forty-four".