30505052500 has 60 divisors (see below), whose sum is σ = 71839944484. Its totient is φ = 11263392000.

The previous prime is 30505052483. The next prime is 30505052507. The reversal of 30505052500 is 525050503.

It can be written as a sum of positive squares in 10 ways, for example, as 30386765124 + 118287376 = 174318^2 + 10876^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30505052507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 436809 + ... + 501808.

Almost surely, 2^30505052500 is an apocalyptic number.

It is an amenable number.

30505052500 is an abundant number, since it is smaller than the sum of its proper divisors (41334891984).

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

30505052500 is a wasteful number, since it uses less digits than its factorization.

30505052500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938654 (or 938637 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 25.

The spelling of 30505052500 in words is "thirty billion, five hundred five million, fifty-two thousand, five hundred".