30078725 has 6 divisors (see below), whose sum is σ = 37297650. Its totient is φ = 24062960.

The previous prime is 30078721. The next prime is 30078749. The reversal of 30078725 is 52787003.

It can be written as a sum of positive squares in 3 ways, for example, as 5536609 + 24542116 = 2353^2 + 4954^2 .

It is not a de Polignac number, because 30078725 - 2² = 30078721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30078691 and 30078700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30078721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 601550 + ... + 601599.

It is an arithmetic number, because the mean of its divisors is an integer number (6216275).

Almost surely, 2^30078725 is an apocalyptic number.

It is an amenable number.

30078725 is a deficient number, since it is larger than the sum of its proper divisors (7218925).

30078725 is a wasteful number, since it uses less digits than its factorization.

30078725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203159 (or 1203154 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 30078725 is about 5484.4074429240. The cubic root of 30078725 is about 310.9948097272.

It can be divided in two parts, 30078 and 725, that added together give a palindrome (30803).

The spelling of 30078725 in words is "thirty million, seventy-eight thousand, seven hundred twenty-five".