258220516 has 6 divisors (see below), whose sum is σ = 451885910. Its totient is φ = 129110256.

The previous prime is 258220489. The next prime is 258220537. The reversal of 258220516 is 615022852.

It can be written as a sum of positive squares in only one way, i.e., 202777600 + 55442916 = 14240^2 + 7446^2 .

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 as a sum of consecutive naturals, namely, 32277561 + ... + 32277568.

Almost surely, 2^258220516 is an apocalyptic number.

It is an amenable number.

258220516 is a deficient number, since it is larger than the sum of its proper divisors (193665394).

258220516 is a wasteful number, since it uses less digits than its factorization.

258220516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64555133 (or 64555131 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 258220516 is about 16069.2413013185. The cubic root of 258220516 is about 636.7909972855.

The spelling of 258220516 in words is "two hundred fifty-eight million, two hundred twenty thousand, five hundred sixteen".