29028225 has 24 divisors (see below), whose sum is σ = 49114912. Its totient is φ = 15120000.

The previous prime is 29028221. The next prime is 29028227. The reversal of 29028225 is 52282092.

It is not a de Polignac number, because 29028225 - 2² = 29028221 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29028192 and 29028201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29028221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1276 + ... + 7725.

Almost surely, 2^29028225 is an apocalyptic number.

29028225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29028225 is a deficient number, since it is larger than the sum of its proper divisors (20086687).

29028225 is a wasteful number, since it uses less digits than its factorization.

29028225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9057 (or 9052 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 29028225 is about 5387.7847952568. The cubic root of 29028225 is about 307.3313239763.

The spelling of 29028225 in words is "twenty-nine million, twenty-eight thousand, two hundred twenty-five".