30572225 has 6 divisors (see below), whose sum is σ = 37909590. Its totient is φ = 24457760.

The previous prime is 30572203. The next prime is 30572237. The reversal of 30572225 is 52227503.

It can be written as a sum of positive squares in 3 ways, for example, as 355216 + 30217009 = 596^2 + 5497^2 .

It is not a de Polignac number, because 30572225 - 2¹⁰ = 30571201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30572194 and 30572203.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 611420 + ... + 611469.

It is an arithmetic number, because the mean of its divisors is an integer number (6318265).

Almost surely, 2^30572225 is an apocalyptic number.

It is an amenable number.

30572225 is a deficient number, since it is larger than the sum of its proper divisors (7337365).

30572225 is a wasteful number, since it uses less digits than its factorization.

30572225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222899 (or 1222894 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 30572225 is about 5529.2155863196. The cubic root of 30572225 is about 312.6864167740.

Adding to 30572225 its reverse (52227503), we get a palindrome (82799728).

The spelling of 30572225 in words is "thirty million, five hundred seventy-two thousand, two hundred twenty-five".