1255400204211 has 24 divisors (see below), whose sum is σ = 1880722621440. Its totient is φ = 806097020400.

The previous prime is 1255400204209. The next prime is 1255400204231. The reversal of 1255400204211 is 1124020045521.

It is a happy number.

1255400204211 is a `hidden beast` number, since 1 + 2 + 55 + 400 + 204 + 2 + 1 + 1 = 666.

It is not a de Polignac number, because 1255400204211 - 2¹ = 1255400204209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255400204231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10603791 + ... + 10721528.

It is an arithmetic number, because the mean of its divisors is an integer number (78363442560).

Almost surely, 2^{1255400204211} is an apocalyptic number.

1255400204211 is a deficient number, since it is larger than the sum of its proper divisors (625322417229).

1255400204211 is a wasteful number, since it uses less digits than its factorization.

1255400204211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21325567 (or 21325564 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 1255400204211 its reverse (1124020045521), we get a palindrome (2379420249732).

The spelling of 1255400204211 in words is "one trillion, two hundred fifty-five billion, four hundred million, two hundred four thousand, two hundred eleven".