1255542540100 has 36 divisors (see below), whose sum is σ = 2749522999300. Its totient is φ = 497609516160.

The previous prime is 1255542540059. The next prime is 1255542540107. The reversal of 1255542540100 is 10452455521.

It can be written as a sum of positive squares in 6 ways, for example, as 80456187904 + 1175086352196 = 283648^2 + 1084014^2 .

It is not an unprimeable number, because it can be changed into a prime (1255542540107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57582795 + ... + 57604594.

Almost surely, 2^{1255542540100} is an apocalyptic number.

1255542540100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255542540100 is an abundant number, since it is smaller than the sum of its proper divisors (1493980459200).

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

1255542540100 is a wasteful number, since it uses less digits than its factorization.

1255542540100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115187512 (or 115187505 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

Adding to 1255542540100 its reverse (10452455521), we get a palindrome (1265994995621).

The spelling of 1255542540100 in words is "one trillion, two hundred fifty-five billion, five hundred forty-two million, five hundred forty thousand, one hundred".