255213705 has 32 divisors (see below), whose sum is σ = 413449344. Its totient is φ = 134424576.

The previous prime is 255213703. The next prime is 255213733. The reversal of 255213705 is 507312552.

It is not a de Polignac number, because 255213705 - 2¹ = 255213703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255213703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 722809 + ... + 723161.

It is an arithmetic number, because the mean of its divisors is an integer number (12920292).

Almost surely, 2^255213705 is an apocalyptic number.

It is an amenable number.

255213705 is a deficient number, since it is larger than the sum of its proper divisors (158235639).

255213705 is a wasteful number, since it uses less digits than its factorization.

255213705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 255213705 is about 15975.4093844258. The cubic root of 255213705 is about 634.3096678737.

The spelling of 255213705 in words is "two hundred fifty-five million, two hundred thirteen thousand, seven hundred five".