30252780250505 has 4 divisors (see below), whose sum is σ = 36303336300612. Its totient is φ = 24202224200400.

The previous prime is 30252780250499. The next prime is 30252780250579. The reversal of 30252780250505 is 50505208725203.

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 8861082237049 + 21391698013456 = 2976757^2 + 4625116^2 .

It is not a de Polignac number, because 30252780250505 - 2³² = 30248485283209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025278025046 + ... + 3025278025055.

It is an arithmetic number, because the mean of its divisors is an integer number (9075834075153).

Almost surely, 2^{30252780250505} is an apocalyptic number.

It is an amenable number.

30252780250505 is a deficient number, since it is larger than the sum of its proper divisors (6050556050107).

30252780250505 is an equidigital number, since it uses as much as digits as its factorization.

30252780250505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050556050106.

The product of its (nonzero) digits is 840000, while the sum is 44.

Adding to 30252780250505 its reverse (50505208725203), we get a palindrome (80757988975708).

The spelling of 30252780250505 in words is "thirty trillion, two hundred fifty-two billion, seven hundred eighty million, two hundred fifty thousand, five hundred five".