1555502501255 has 16 divisors (see below), whose sum is σ = 1870750257120. Its totient is φ = 1241639134848.

The previous prime is 1555502501233. The next prime is 1555502501269. The reversal of 1555502501255 is 5521052055551.

It is a cyclic number.

It is not a de Polignac number, because 1555502501255 - 2²² = 1555498306951 is a prime.

It is a super-2 number, since 2×1555502501255² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6265469 + ... + 6509001.

It is an arithmetic number, because the mean of its divisors is an integer number (116921891070).

Almost surely, 2^{1555502501255} is an apocalyptic number.

1555502501255 is a deficient number, since it is larger than the sum of its proper divisors (315247755865).

1555502501255 is a wasteful number, since it uses less digits than its factorization.

1555502501255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246370.

The product of its (nonzero) digits is 312500, while the sum is 41.

The spelling of 1555502501255 in words is "one trillion, five hundred fifty-five billion, five hundred two million, five hundred one thousand, two hundred fifty-five".