1255444100 has 36 divisors (see below), whose sum is σ = 2728992000. Its totient is φ = 501315360.

The previous prime is 1255444061. The next prime is 1255444103. The reversal of 1255444100 is 14445521.

It is a super-2 number, since 2×1255444100² = 3152279776449620000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1255444100.

It is not an unprimeable number, because it can be changed into a prime (1255444103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49421 + ... + 70379.

Almost surely, 2^1255444100 is an apocalyptic number.

1255444100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255444100 is an abundant number, since it is smaller than the sum of its proper divisors (1473547900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255444100 is a wasteful number, since it uses less digits than its factorization.

1255444100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21572 (or 21565 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1255444100 is about 35432.2466123727. The cubic root of 1255444100 is about 1078.7789411953.

Adding to 1255444100 its reverse (14445521), we get a palindrome (1269889621).

The spelling of 1255444100 in words is "one billion, two hundred fifty-five million, four hundred forty-four thousand, one hundred".