28519425 has 96 divisors (see below), whose sum is σ = 59996160. Its totient is φ = 13147200.

The previous prime is 28519423. The next prime is 28519451. The reversal of 28519425 is 52491582.

It is not a de Polignac number, because 28519425 - 2¹ = 28519423 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28519425.

It is not an unprimeable number, because it can be changed into a prime (28519423) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 170692 + ... + 170858.

It is an arithmetic number, because the mean of its divisors is an integer number (624960).

Almost surely, 2^28519425 is an apocalyptic number.

28519425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28519425 is an abundant number, since it is smaller than the sum of its proper divisors (31476735).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28519425 is a wasteful number, since it uses less digits than its factorization.

28519425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 209 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 28519425 is about 5340.3581340581. The cubic root of 28519425 is about 305.5251188538.

The spelling of 28519425 in words is "twenty-eight million, five hundred nineteen thousand, four hundred twenty-five".