1255525611503 has 4 divisors (see below), whose sum is σ = 1255528214688. Its totient is φ = 1255523008320.

The previous prime is 1255525611497. The next prime is 1255525611523. The reversal of 1255525611503 is 3051165255521.

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 1255525611503 - 2¹² = 1255525607407 is a prime.

It is a super-2 number, since 2×1255525611503² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255525611523) 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, 342626 + ... + 1621247.

It is an arithmetic number, because the mean of its divisors is an integer number (313882053672).

Almost surely, 2^{1255525611503} is an apocalyptic number.

1255525611503 is a deficient number, since it is larger than the sum of its proper divisors (2603185).

1255525611503 is an equidigital number, since it uses as much as digits as its factorization.

1255525611503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603184.

The product of its (nonzero) digits is 225000, while the sum is 41.

The spelling of 1255525611503 in words is "one trillion, two hundred fifty-five billion, five hundred twenty-five million, six hundred eleven thousand, five hundred three".