1255100044 has 24 divisors (see below), whose sum is σ = 2406062736. Its totient is φ = 568128000.

The previous prime is 1255100029. The next prime is 1255100053. The reversal of 1255100044 is 4400015521.

It is a super-2 number, since 2×1255100044² = 3150552240897603872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1255099988 and 1255100024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48577 + ... + 69784.

It is an arithmetic number, because the mean of its divisors is an integer number (100252614).

Almost surely, 2^1255100044 is an apocalyptic number.

It is an amenable number.

1255100044 is a deficient number, since it is larger than the sum of its proper divisors (1150962692).

1255100044 is a wasteful number, since it uses less digits than its factorization.

1255100044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118617 (or 118615 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1255100044 is about 35427.3911543032. The cubic root of 1255100044 is about 1078.6803852930.

Adding to 1255100044 its reverse (4400015521), we get a palindrome (5655115565).

The spelling of 1255100044 in words is "one billion, two hundred fifty-five million, one hundred thousand, forty-four".