30137225 has 6 divisors (see below), whose sum is σ = 37370190. Its totient is φ = 24109760.

The previous prime is 30137207. The next prime is 30137251. The reversal of 30137225 is 52273103.

It can be written as a sum of positive squares in 3 ways, for example, as 674041 + 29463184 = 821^2 + 5428^2 .

It is not a de Polignac number, because 30137225 - 2¹⁶ = 30071689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30137225.

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, 602720 + ... + 602769.

It is an arithmetic number, because the mean of its divisors is an integer number (6228365).

Almost surely, 2^30137225 is an apocalyptic number.

It is an amenable number.

30137225 is a deficient number, since it is larger than the sum of its proper divisors (7232965).

30137225 is a wasteful number, since it uses less digits than its factorization.

30137225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205499 (or 1205494 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 30137225 is about 5489.7381540471. The cubic root of 30137225 is about 311.1962967081.

The spelling of 30137225 in words is "thirty million, one hundred thirty-seven thousand, two hundred twenty-five".