1255144400 has 60 divisors (see below), whose sum is σ = 3079689792. Its totient is φ = 491368320.

The previous prime is 1255144349. The next prime is 1255144403. The reversal of 1255144400 is 44415521.

It is a self number, because there is not a number n which added to its sum of digits gives 1255144400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255144403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14582 + ... + 52181.

Almost surely, 2^1255144400 is an apocalyptic number.

1255144400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255144400 is an abundant number, since it is smaller than the sum of its proper divisors (1824545392).

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

1255144400 is a wasteful number, since it uses less digits than its factorization.

1255144400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66828 (or 66817 counting only the distinct ones).

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

The square root of 1255144400 is about 35428.0171615630. The cubic root of 1255144400 is about 1078.6930922172.

Adding to 1255144400 its reverse (44415521), we get a palindrome (1299559921).

The spelling of 1255144400 in words is "one billion, two hundred fifty-five million, one hundred forty-four thousand, four hundred".