29872225 has 6 divisors (see below), whose sum is σ = 37041590. Its totient is φ = 23897760.

The previous prime is 29872223. The next prime is 29872253. The reversal of 29872225 is 52227892.

It can be written as a sum of positive squares in 3 ways, for example, as 4460544 + 25411681 = 2112^2 + 5041^2 .

It is not a de Polignac number, because 29872225 - 2¹ = 29872223 is a prime.

It is a super-3 number, since 3×29872225³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29872223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 597420 + ... + 597469.

Almost surely, 2^29872225 is an apocalyptic number.

29872225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29872225 is a deficient number, since it is larger than the sum of its proper divisors (7169365).

29872225 is a wasteful number, since it uses less digits than its factorization.

29872225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194899 (or 1194894 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 29872225 is about 5465.5489202824. The cubic root of 29872225 is about 310.2814821081.

The spelling of 29872225 in words is "twenty-nine million, eight hundred seventy-two thousand, two hundred twenty-five".