30125020 has 48 divisors (see below), whose sum is σ = 67441248. Its totient is φ = 11264000.

The previous prime is 30124981. The next prime is 30125023. The reversal of 30125020 is 2052103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30125023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85164 + ... + 85516.

It is an arithmetic number, because the mean of its divisors is an integer number (1405026).

Almost surely, 2^30125020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30125020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33720624).

30125020 is an abundant number, since it is smaller than the sum of its proper divisors (37316228).

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

30125020 is a wasteful number, since it uses less digits than its factorization.

30125020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 30125020 is about 5488.6264219748. The cubic root of 30125020 is about 311.1542815188.

Adding to 30125020 its reverse (2052103), we get a palindrome (32177123).

The spelling of 30125020 in words is "thirty million, one hundred twenty-five thousand, twenty".