258405269 has 4 divisors (see below), whose sum is σ = 258606720. Its totient is φ = 258203820.

The previous prime is 258405241. The next prime is 258405271. The reversal of 258405269 is 962504852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 258405269 - 2¹⁶ = 258339733 is a prime.

It is a super-2 number, since 2×258405269² = 133546566093924722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258405209) 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, 98789 + ... + 101370.

It is an arithmetic number, because the mean of its divisors is an integer number (64651680).

Almost surely, 2^258405269 is an apocalyptic number.

It is an amenable number.

258405269 is a deficient number, since it is larger than the sum of its proper divisors (201451).

258405269 is a wasteful number, since it uses less digits than its factorization.

258405269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201450.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 258405269 is about 16074.9889269013. The cubic root of 258405269 is about 636.9428326255.

The spelling of 258405269 in words is "two hundred fifty-eight million, four hundred five thousand, two hundred sixty-nine".