258998725 has 6 divisors (see below), whose sum is σ = 321158450. Its totient is φ = 207198960.

The previous prime is 258998713. The next prime is 258998749. The reversal of 258998725 is 527899852.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 31169889 + 227828836 = 5583^2 + 15094^2 .

It is not a de Polignac number, because 258998725 - 2⁵ = 258998693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5179950 + ... + 5179999.

Almost surely, 2^258998725 is an apocalyptic number.

258998725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

258998725 is a deficient number, since it is larger than the sum of its proper divisors (62159725).

258998725 is a wasteful number, since it uses less digits than its factorization.

258998725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10359959 (or 10359954 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 55.

The square root of 258998725 is about 16093.4373270597. The cubic root of 258998725 is about 637.4300628135.

The spelling of 258998725 in words is "two hundred fifty-eight million, nine hundred ninety-eight thousand, seven hundred twenty-five".