29798856225 has 18 divisors (see below), whose sum is σ = 53373062886. Its totient is φ = 15892723200.

The previous prime is 29798856221. The next prime is 29798856259. The reversal of 29798856225 is 52265889792.

It can be written as a sum of positive squares in 3 ways, for example, as 1732890384 + 28065965841 = 41628^2 + 167529^2 .

It is not a de Polignac number, because 29798856225 - 2² = 29798856221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29798856221) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 66219456 + ... + 66219905.

Almost surely, 2^29798856225 is an apocalyptic number.

29798856225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29798856225 is a deficient number, since it is larger than the sum of its proper divisors (23574206661).

29798856225 is a wasteful number, since it uses less digits than its factorization.

29798856225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132439377 (or 132439369 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The spelling of 29798856225 in words is "twenty-nine billion, seven hundred ninety-eight million, eight hundred fifty-six thousand, two hundred twenty-five".