29071225 has 12 divisors (see below), whose sum is σ = 36888016. Its totient is φ = 22715280.

The previous prime is 29071223. The next prime is 29071261. The reversal of 29071225 is 52217092.

It is not a de Polignac number, because 29071225 - 2¹ = 29071223 is a prime.

It is a super-2 number, since 2×29071225² = 1690272246001250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29071193 and 29071202.

It is not an unprimeable number, because it can be changed into a prime (29071223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12447 + ... + 14596.

Almost surely, 2^29071225 is an apocalyptic number.

29071225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29071225 is a deficient number, since it is larger than the sum of its proper divisors (7816791).

29071225 is a wasteful number, since it uses less digits than its factorization.

29071225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27096 (or 27091 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 29071225 is about 5391.7738268588. The cubic root of 29071225 is about 307.4830008009.

The spelling of 29071225 in words is "twenty-nine million, seventy-one thousand, two hundred twenty-five".