30520245525 has 48 divisors (see below), whose sum is σ = 62911354368. Its totient is φ = 12683736000.

The previous prime is 30520245479. The next prime is 30520245527. The reversal of 30520245525 is 52554202503.

It is not a de Polignac number, because 30520245525 - 2⁶ = 30520245461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30520245527) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2636671 + ... + 2648220.

It is an arithmetic number, because the mean of its divisors is an integer number (1310653216).

Almost surely, 2^30520245525 is an apocalyptic number.

30520245525 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30520245525 is an abundant number, since it is smaller than the sum of its proper divisors (32391108843).

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

30520245525 is a wasteful number, since it uses less digits than its factorization.

30520245525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284922 (or 5284917 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 33.

The spelling of 30520245525 in words is "thirty billion, five hundred twenty million, two hundred forty-five thousand, five hundred twenty-five".