305211504252 has 12 divisors (see below), whose sum is σ = 712160176616. Its totient is φ = 101737168080.

The previous prime is 305211504233. The next prime is 305211504259. The reversal of 305211504252 is 252405112503.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×305211504252² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305211504259) 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, 12717145999 + ... + 12717146022.

Almost surely, 2^305211504252 is an apocalyptic number.

It is an amenable number.

305211504252 is an abundant number, since it is smaller than the sum of its proper divisors (406948672364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305211504252 is a wasteful number, since it uses less digits than its factorization.

305211504252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25434292028 (or 25434292026 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 305211504252 its reverse (252405112503), we get a palindrome (557616616755).

The spelling of 305211504252 in words is "three hundred five billion, two hundred eleven million, five hundred four thousand, two hundred fifty-two".