30125000 has 56 divisors (see below), whose sum is σ = 70897530. Its totient is φ = 12000000.

The previous prime is 30124981. The next prime is 30125023. The reversal of 30125000 is 52103.

It can be written as a sum of positive squares in 7 ways, for example, as 12096484 + 18028516 = 3478^2 + 4246^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 124880 + ... + 125120.

Almost surely, 2^30125000 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 30125000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35448765).

30125000 is an abundant number, since it is smaller than the sum of its proper divisors (40772530).

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

30125000 is an frugal number, since it uses more digits than its factorization.

30125000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 30125000 is about 5488.6246000250. The cubic root of 30125000 is about 311.1542126603.

Adding to 30125000 its reverse (52103), we get a palindrome (30177103).

The spelling of 30125000 in words is "thirty million, one hundred twenty-five thousand".