255406144515 has 16 divisors (see below), whose sum is σ = 408700857600. Its totient is φ = 136199601632.

The previous prime is 255406144459. The next prime is 255406144547. The reversal of 255406144515 is 515441604552.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 255406144515 - 2¹⁹ = 255405620227 is a prime.

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, 938445 + ... + 1179614.

It is an arithmetic number, because the mean of its divisors is an integer number (25543803600).

Almost surely, 2^255406144515 is an apocalyptic number.

255406144515 is a deficient number, since it is larger than the sum of its proper divisors (153294713085).

255406144515 is a wasteful number, since it uses less digits than its factorization.

255406144515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126106.

The product of its (nonzero) digits is 480000, while the sum is 42.

The spelling of 255406144515 in words is "two hundred fifty-five billion, four hundred six million, one hundred forty-four thousand, five hundred fifteen".