258224786969 has 4 divisors (see below), whose sum is σ = 262457980260. Its totient is φ = 253991593680.

The previous prime is 258224786909. The next prime is 258224786983. The reversal of 258224786969 is 969687422852.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 120817417744 + 137407369225 = 347588^2 + 370685^2 .

It is a cyclic number.

It is not a de Polignac number, because 258224786969 - 2⁸ = 258224786713 is a prime.

It is a super-2 number, since 2×258224786969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 258224786899 and 258224786908.

It is not an unprimeable number, because it can be changed into a prime (258224786909) 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, 2116596554 + ... + 2116596675.

It is an arithmetic number, because the mean of its divisors is an integer number (65614495065).

Almost surely, 2^258224786969 is an apocalyptic number.

It is an amenable number.

258224786969 is a deficient number, since it is larger than the sum of its proper divisors (4233193291).

258224786969 is an equidigital number, since it uses as much as digits as its factorization.

258224786969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233193290.

The product of its digits is 209018880, while the sum is 68.

The spelling of 258224786969 in words is "two hundred fifty-eight billion, two hundred twenty-four million, seven hundred eighty-six thousand, nine hundred sixty-nine".