258252755533 has 4 divisors (see below), whose sum is σ = 258292183968. Its totient is φ = 258213327100.

The previous prime is 258252755461. The next prime is 258252755543. The reversal of 258252755533 is 335557252852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 258252755533 - 2¹³ = 258252747341 is a prime.

It is a super-2 number, since 2×258252755533² (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 (258252755543) 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, 19704391 + ... + 19717492.

It is an arithmetic number, because the mean of its divisors is an integer number (64573045992).

Almost surely, 2^258252755533 is an apocalyptic number.

It is an amenable number.

258252755533 is a deficient number, since it is larger than the sum of its proper divisors (39428435).

258252755533 is an equidigital number, since it uses as much as digits as its factorization.

258252755533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39428434.

The product of its digits is 12600000, while the sum is 52.

The spelling of 258252755533 in words is "two hundred fifty-eight billion, two hundred fifty-two million, seven hundred fifty-five thousand, five hundred thirty-three".