30005007505 has 16 divisors (see below), whose sum is σ = 40115015424. Its totient is φ = 21357527680.

The previous prime is 30005007481. The next prime is 30005007521. The reversal of 30005007505 is 50570050003.

It is a happy number.

It is not a de Polignac number, because 30005007505 - 2³¹ = 27857523857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30005007505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5801092 + ... + 5806261.

It is an arithmetic number, because the mean of its divisors is an integer number (2507188464).

Almost surely, 2^30005007505 is an apocalyptic number.

It is an amenable number.

30005007505 is a deficient number, since it is larger than the sum of its proper divisors (10110007919).

30005007505 is a wasteful number, since it uses less digits than its factorization.

30005007505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11607416.

The product of its (nonzero) digits is 2625, while the sum is 25.

Adding to 30005007505 its reverse (50570050003), we get a palindrome (80575057508).

The spelling of 30005007505 in words is "thirty billion, five million, seven thousand, five hundred five".