258005755 has 8 divisors (see below), whose sum is σ = 353836512. Its totient is φ = 176918208.

The previous prime is 258005747. The next prime is 258005791. The reversal of 258005755 is 557500852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 258005755 - 2³ = 258005747 is a prime.

It is a super-2 number, since 2×258005755² = 133133939226240050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3685762 + ... + 3685831.

It is an arithmetic number, because the mean of its divisors is an integer number (44229564).

Almost surely, 2^258005755 is an apocalyptic number.

258005755 is a deficient number, since it is larger than the sum of its proper divisors (95830757).

258005755 is an equidigital number, since it uses as much as digits as its factorization.

258005755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7371605.

The product of its (nonzero) digits is 70000, while the sum is 37.

The square root of 258005755 is about 16062.5575485350. The cubic root of 258005755 is about 636.6144094544.

The spelling of 258005755 in words is "two hundred fifty-eight million, five thousand, seven hundred fifty-five".