1255031545505 has 16 divisors (see below), whose sum is σ = 1625708033280. Its totient is φ = 927255688128.

The previous prime is 1255031545499. The next prime is 1255031545507. The reversal of 1255031545505 is 5055451305521.

It is a cyclic number.

It is not a de Polignac number, because 1255031545505 - 2⁸ = 1255031545249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255031545507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188157317 + ... + 188163986.

It is an arithmetic number, because the mean of its divisors is an integer number (101606752080).

Almost surely, 2^{1255031545505} is an apocalyptic number.

It is an amenable number.

1255031545505 is a deficient number, since it is larger than the sum of its proper divisors (370676487775).

1255031545505 is a wasteful number, since it uses less digits than its factorization.

1255031545505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376321360.

The product of its (nonzero) digits is 375000, while the sum is 41.

The spelling of 1255031545505 in words is "one trillion, two hundred fifty-five billion, thirty-one million, five hundred forty-five thousand, five hundred five".