29428025 has 24 divisors (see below), whose sum is σ = 40202784. Its totient is φ = 21190400.

The previous prime is 29428013. The next prime is 29428031. The reversal of 29428025 is 52082492.

It is not a de Polignac number, because 29428025 - 2¹⁸ = 29165881 is a prime.

It is a hoax number, since the sum of its digits (32) 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 = 29427982 and 29428000.

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, 30602 + ... + 31548.

It is an arithmetic number, because the mean of its divisors is an integer number (1675116).

Almost surely, 2^29428025 is an apocalyptic number.

29428025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

29428025 is a deficient number, since it is larger than the sum of its proper divisors (10774759).

29428025 is a wasteful number, since it uses less digits than its factorization.

29428025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081 (or 1076 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 29428025 is about 5424.7603633709. The cubic root of 29428025 is about 308.7358334073.

The spelling of 29428025 in words is "twenty-nine million, four hundred twenty-eight thousand, twenty-five".