30791225 has 12 divisors (see below), whose sum is σ = 39070416. Its totient is φ = 24059280.

The previous prime is 30791221. The next prime is 30791239. The reversal of 30791225 is 52219703.

It is not a de Polignac number, because 30791225 - 2² = 30791221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30791221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13247 + ... + 15396.

It is an arithmetic number, because the mean of its divisors is an integer number (3255868).

Almost surely, 2^30791225 is an apocalyptic number.

It is an amenable number.

30791225 is a deficient number, since it is larger than the sum of its proper divisors (8279191).

30791225 is a wasteful number, since it uses less digits than its factorization.

30791225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28696 (or 28691 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 30791225 is about 5548.9841412641. The cubic root of 30791225 is about 313.4312699990.

The spelling of 30791225 in words is "thirty million, seven hundred ninety-one thousand, two hundred twenty-five".