1255624144 has 20 divisors (see below), whose sum is σ = 2434136740. Its totient is φ = 627459840.

The previous prime is 1255624141. The next prime is 1255624157. The reversal of 1255624144 is 4414265521.

It can be written as a sum of positive squares in 2 ways, for example, as 575040400 + 680583744 = 23980^2 + 26088^2 .

It is a super-3 number, since 3×1255624144³ (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 (1255624141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8692 + ... + 50860.

It is an arithmetic number, because the mean of its divisors is an integer number (121706837).

Almost surely, 2^1255624144 is an apocalyptic number.

It is an amenable number.

1255624144 is a deficient number, since it is larger than the sum of its proper divisors (1178512596).

1255624144 is a wasteful number, since it uses less digits than its factorization.

1255624144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44038 (or 44032 counting only the distinct ones).

The product of its digits is 38400, while the sum is 34.

The square root of 1255624144 is about 35434.7872012800. The cubic root of 1255624144 is about 1078.8305081777.

Adding to 1255624144 its reverse (4414265521), we get a palindrome (5669889665).

The spelling of 1255624144 in words is "one billion, two hundred fifty-five million, six hundred twenty-four thousand, one hundred forty-four".