30523021525 has 12 divisors (see below), whose sum is σ = 38238740932. Its totient is φ = 24166679040.

The previous prime is 30523021513. The next prime is 30523021549. The reversal of 30523021525 is 52512032503.

It can be written as a sum of positive squares in 6 ways, for example, as 332916516 + 30190105009 = 18246^2 + 173753^2 .

It is not a de Polignac number, because 30523021525 - 2¹³ = 30523013333 is a prime.

It is a super-2 number, since 2×30523021525² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30523021493 and 30523021502.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6290982 + ... + 6295831.

Almost surely, 2^30523021525 is an apocalyptic number.

It is an amenable number.

30523021525 is a deficient number, since it is larger than the sum of its proper divisors (7715719407).

30523021525 is a wasteful number, since it uses less digits than its factorization.

30523021525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12586920 (or 12586915 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The spelling of 30523021525 in words is "thirty billion, five hundred twenty-three million, twenty-one thousand, five hundred twenty-five".