30125756 has 12 divisors (see below), whose sum is σ = 52994592. Its totient is φ = 14984448.

The previous prime is 30125663. The next prime is 30125759. The reversal of 30125756 is 65752103.

It is a super-2 number, since 2×30125756² = 1815122349143072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30125759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18740 + ... + 20283.

It is an arithmetic number, because the mean of its divisors is an integer number (4416216).

Almost surely, 2^30125756 is an apocalyptic number.

It is an amenable number.

30125756 is a deficient number, since it is larger than the sum of its proper divisors (22868836).

30125756 is a wasteful number, since it uses less digits than its factorization.

30125756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39220 (or 39218 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 30125756 is about 5488.6934693058. The cubic root of 30125756 is about 311.1568154887.

Adding to 30125756 its reverse (65752103), we get a palindrome (95877859).

The spelling of 30125756 in words is "thirty million, one hundred twenty-five thousand, seven hundred fifty-six".