258065629 has 4 divisors (see below), whose sum is σ = 258123580. Its totient is φ = 258007680.

The previous prime is 258065569. The next prime is 258065699. The reversal of 258065629 is 926560852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 126045529 + 132020100 = 11227^2 + 11490^2 .

It is a cyclic number.

It is not a de Polignac number, because 258065629 - 2¹⁵ = 258032861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258065699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21684 + ... + 31405.

It is an arithmetic number, because the mean of its divisors is an integer number (64530895).

Almost surely, 2^258065629 is an apocalyptic number.

It is an amenable number.

258065629 is a deficient number, since it is larger than the sum of its proper divisors (57951).

258065629 is an equidigital number, since it uses as much as digits as its factorization.

258065629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57950.

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 258065629 is about 16064.4212158422. The cubic root of 258065629 is about 636.6636508664.

The spelling of 258065629 in words is "two hundred fifty-eight million, sixty-five thousand, six hundred twenty-nine".