258005257031 has 4 divisors (see below), whose sum is σ = 258648662064. Its totient is φ = 257361852000.

The previous prime is 258005257021. The next prime is 258005257043. The reversal of 258005257031 is 130752500852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 258005257031 - 2¹⁸ = 258004994887 is a prime.

It is a super-2 number, since 2×258005257031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258005257021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321701915 + ... + 321702716.

It is an arithmetic number, because the mean of its divisors is an integer number (64662165516).

Almost surely, 2^258005257031 is an apocalyptic number.

258005257031 is a deficient number, since it is larger than the sum of its proper divisors (643405033).

258005257031 is an equidigital number, since it uses as much as digits as its factorization.

258005257031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643405032.

The product of its (nonzero) digits is 84000, while the sum is 38.

Adding to 258005257031 its reverse (130752500852), we get a palindrome (388757757883).

The spelling of 258005257031 in words is "two hundred fifty-eight billion, five million, two hundred fifty-seven thousand, thirty-one".