30750125 has 32 divisors (see below), whose sum is σ = 44388864. Its totient is φ = 20832000.

The previous prime is 30750107. The next prime is 30750133. The reversal of 30750125 is 52105703.

It is not a de Polignac number, because 30750125 - 2⁸ = 30749869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30750125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98720 + ... + 99030.

It is an arithmetic number, because the mean of its divisors is an integer number (1387152).

Almost surely, 2^30750125 is an apocalyptic number.

30750125 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30750125 is a deficient number, since it is larger than the sum of its proper divisors (13638739).

30750125 is a wasteful number, since it uses less digits than its factorization.

30750125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 30750125 is about 5545.2795240637. The cubic root of 30750125 is about 313.2917523163.

Adding to 30750125 its reverse (52105703), we get a palindrome (82855828).

The spelling of 30750125 in words is "thirty million, seven hundred fifty thousand, one hundred twenty-five".