258500000 has 168 divisors, whose sum is σ = 708740928. Its totient is φ = 92000000.

The previous prime is 258499993. The next prime is 258500017. The reversal of 258500000 is 5852.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5499977 + ... + 5500023.

It is an arithmetic number, because the mean of its divisors is an integer number (4218696).

Almost surely, 2^258500000 is an apocalyptic number.

258500000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354370464).

258500000 is an abundant number, since it is smaller than the sum of its proper divisors (450240928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258500000 is an frugal number, since it uses more digits than its factorization.

258500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 258500000 is about 16077.9351908135. The cubic root of 258500000 is about 637.0206572249.

Adding to 258500000 its reverse (5852), we get a palindrome (258505852).

The spelling of 258500000 in words is "two hundred fifty-eight million, five hundred thousand".