30205525 has 12 divisors (see below), whose sum is σ = 42805792. Its totient is φ = 20712240.

The previous prime is 30205519. The next prime is 30205529. The reversal of 30205525 is 52550203.

It is not a de Polignac number, because 30205525 - 2³ = 30205517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30205496 and 30205505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30205529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86127 + ... + 86476.

Almost surely, 2^30205525 is an apocalyptic number.

30205525 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30205525 is a deficient number, since it is larger than the sum of its proper divisors (12600267).

30205525 is a wasteful number, since it uses less digits than its factorization.

30205525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172620 (or 172615 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 30205525 is about 5495.9553309684. The cubic root of 30205525 is about 311.4312074177.

Adding to 30205525 its reverse (52550203), we get a palindrome (82755728).

The spelling of 30205525 in words is "thirty million, two hundred five thousand, five hundred twenty-five".