20150030525 has 24 divisors (see below), whose sum is σ = 25130486784. Its totient is φ = 16026998400.

The previous prime is 20150030507. The next prime is 20150030533. The reversal of 20150030525 is 52503005102.

It is not a de Polignac number, because 20150030525 - 2⁸ = 20150030269 is a prime.

It is a Duffinian number.

20150030525 is a modest number, since divided by 30525 gives 20150 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 20150030525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8771177 + ... + 8773473.

It is an arithmetic number, because the mean of its divisors is an integer number (1047103616).

Almost surely, 2^20150030525 is an apocalyptic number.

20150030525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20150030525 is a deficient number, since it is larger than the sum of its proper divisors (4980456259).

20150030525 is a wasteful number, since it uses less digits than its factorization.

20150030525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181 (or 4176 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

Adding to 20150030525 its reverse (52503005102), we get a palindrome (72653035627).

The spelling of 20150030525 in words is "twenty billion, one hundred fifty million, thirty thousand, five hundred twenty-five".