1255012100051 has 4 divisors (see below), whose sum is σ = 1257923961504. Its totient is φ = 1252100238600.

The previous prime is 1255012100011. The next prime is 1255012100053. The reversal of 1255012100051 is 1500012105521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1255012100051 - 2⁶ = 1255012099987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255012100053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1455930080 + ... + 1455930941.

It is an arithmetic number, because the mean of its divisors is an integer number (314480990376).

Almost surely, 2^{1255012100051} is an apocalyptic number.

1255012100051 is a deficient number, since it is larger than the sum of its proper divisors (2911861453).

1255012100051 is an equidigital number, since it uses as much as digits as its factorization.

1255012100051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911861452.

The product of its (nonzero) digits is 500, while the sum is 23.

Adding to 1255012100051 its reverse (1500012105521), we get a palindrome (2755024205572).

The spelling of 1255012100051 in words is "one trillion, two hundred fifty-five billion, twelve million, one hundred thousand, fifty-one".