255172605 has 16 divisors (see below), whose sum is σ = 408623424. Its totient is φ = 135976320.

The previous prime is 255172583. The next prime is 255172681. The reversal of 255172605 is 506271552.

It is not a de Polignac number, because 255172605 - 2⁵ = 255172573 is a prime.

It is a super-2 number, since 2×255172605² = 130226116684972050, which contains 22 as substring.

It is a Curzon number.

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, 12777 + ... + 25953.

It is an arithmetic number, because the mean of its divisors is an integer number (25538964).

Almost surely, 2^255172605 is an apocalyptic number.

It is an amenable number.

255172605 is a deficient number, since it is larger than the sum of its proper divisors (153450819).

255172605 is a wasteful number, since it uses less digits than its factorization.

255172605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14476.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 255172605 is about 15974.1229806209. The cubic root of 255172605 is about 634.2756159838.

The spelling of 255172605 in words is "two hundred fifty-five million, one hundred seventy-two thousand, six hundred five".