258625087 has 16 divisors (see below), whose sum is σ = 314726400. Its totient is φ = 212033976.

The previous prime is 258625049. The next prime is 258625109. The reversal of 258625087 is 780526852.

It is a de Polignac number, because none of the positive numbers 2^k-258625087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258625027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8503 + ... + 24280.

It is an arithmetic number, because the mean of its divisors is an integer number (19670400).

Almost surely, 2^258625087 is an apocalyptic number.

258625087 is a deficient number, since it is larger than the sum of its proper divisors (56101313).

258625087 is an equidigital number, since it uses as much as digits as its factorization.

258625087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32827 (or 32813 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 258625087 is about 16081.8247409925. The cubic root of 258625087 is about 637.1233911433.

The spelling of 258625087 in words is "two hundred fifty-eight million, six hundred twenty-five thousand, eighty-seven".