255166615 has 24 divisors (see below), whose sum is σ = 345693600. Its totient is φ = 180544320.

The previous prime is 255166591. The next prime is 255166631. The reversal of 255166615 is 516661552.

It is not a de Polignac number, because 255166615 - 2¹⁵ = 255133847 is a prime.

It is a super-2 number, since 2×255166615² = 130220002821116450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16686 + ... + 28084.

It is an arithmetic number, because the mean of its divisors is an integer number (14403900).

Almost surely, 2^255166615 is an apocalyptic number.

255166615 is a deficient number, since it is larger than the sum of its proper divisors (90526985).

255166615 is a wasteful number, since it uses less digits than its factorization.

255166615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11463 (or 11452 counting only the distinct ones).

The product of its digits is 54000, while the sum is 37.

The square root of 255166615 is about 15973.9354887892. The cubic root of 255166615 is about 634.2706528849.

It can be divided in two parts, 25516 and 6615, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 255166615 in words is "two hundred fifty-five million, one hundred sixty-six thousand, six hundred fifteen".