29664225 has 72 divisors (see below), whose sum is σ = 58225440. Its totient is φ = 14929920.

The previous prime is 29664223. The next prime is 29664233. The reversal of 29664225 is 52246692.

29664225 is a `hidden beast` number, since 2 + 9 + 6 + 642 + 2 + 5 = 666.

It is not a de Polignac number, because 29664225 - 2¹ = 29664223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29664225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29664221) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 115297 + ... + 115553.

Almost surely, 2^29664225 is an apocalyptic number.

29664225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29664225 is a deficient number, since it is larger than the sum of its proper divisors (28561215).

29664225 is a wasteful number, since it uses less digits than its factorization.

29664225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 284 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 29664225 is about 5446.4874001507. The cubic root of 29664225 is about 309.5596418459.

The spelling of 29664225 in words is "twenty-nine million, six hundred sixty-four thousand, two hundred twenty-five".