258265616 has 40 divisors (see below), whose sum is σ = 574915584. Its totient is φ = 110096640.

The previous prime is 258265591. The next prime is 258265627. The reversal of 258265616 is 616562852.

It is a super-2 number, since 2×258265616² = 133402256815718912, which contains 22 as substring.

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, 15356 + ... + 27428.

Almost surely, 2^258265616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 258265616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287457792).

258265616 is an abundant number, since it is smaller than the sum of its proper divisors (316649968).

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

258265616 is a wasteful number, since it uses less digits than its factorization.

258265616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12279 (or 12273 counting only the distinct ones).

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

The square root of 258265616 is about 16070.6445421458. The cubic root of 258265616 is about 636.8280684454.

The spelling of 258265616 in words is "two hundred fifty-eight million, two hundred sixty-five thousand, six hundred sixteen".