28814925 has 48 divisors (see below), whose sum is σ = 51018560. Its totient is φ = 14307840.

The previous prime is 28814921. The next prime is 28814927. The reversal of 28814925 is 52941882.

It is not a de Polignac number, because 28814925 - 2² = 28814921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28814921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103887 + ... + 104163.

Almost surely, 2^28814925 is an apocalyptic number.

28814925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28814925 is a deficient number, since it is larger than the sum of its proper divisors (22203635).

28814925 is a wasteful number, since it uses less digits than its factorization.

28814925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 377 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 28814925 is about 5367.9535206632. The cubic root of 28814925 is about 306.5767136665.

The spelling of 28814925 in words is "twenty-eight million, eight hundred fourteen thousand, nine hundred twenty-five".