30001513525 has 24 divisors (see below), whose sum is σ = 38015245440. Its totient is φ = 23477045760.

The previous prime is 30001513523. The next prime is 30001513543. The reversal of 30001513525 is 52531510003.

It is not a de Polignac number, because 30001513525 - 2¹ = 30001513523 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30001513525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30001513523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2363646 + ... + 2376304.

It is an arithmetic number, because the mean of its divisors is an integer number (1583968560).

Almost surely, 2^30001513525 is an apocalyptic number.

It is an amenable number.

30001513525 is a deficient number, since it is larger than the sum of its proper divisors (8013731915).

30001513525 is a wasteful number, since it uses less digits than its factorization.

30001513525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14733 (or 14728 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

The spelling of 30001513525 in words is "thirty billion, one million, five hundred thirteen thousand, five hundred twenty-five".