29720325 has 24 divisors (see below), whose sum is σ = 49385728. Its totient is φ = 15770880.

The previous prime is 29720311. The next prime is 29720371. The reversal of 29720325 is 52302792.

It is a happy number.

It is not a de Polignac number, because 29720325 - 2⁵ = 29720293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29720292 and 29720301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15837 + ... + 17613.

Almost surely, 2^29720325 is an apocalyptic number.

29720325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29720325 is a deficient number, since it is larger than the sum of its proper divisors (19665403).

29720325 is a wasteful number, since it uses less digits than its factorization.

29720325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013 (or 2008 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 29720325 is about 5451.6350758282. The cubic root of 29720325 is about 309.7546619402.

The spelling of 29720325 in words is "twenty-nine million, seven hundred twenty thousand, three hundred twenty-five".