28083428325 has 48 divisors (see below), whose sum is σ = 54305601600. Its totient is φ = 14189515200.

The previous prime is 28083428323. The next prime is 28083428327. The reversal of 28083428325 is 52382438082.

It is a happy number.

28083428325 is a `hidden beast` number, since 280 + 8 + 3 + 42 + 8 + 325 = 666.

It is an interprime number because it is at equal distance from previous prime (28083428323) and next prime (28083428327).

It is not a de Polignac number, because 28083428325 - 2¹ = 28083428323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28083428323) 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, 1082046 + ... + 1107695.

It is an arithmetic number, because the mean of its divisors is an integer number (1131366700).

Almost surely, 2^28083428325 is an apocalyptic number.

28083428325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28083428325 is a deficient number, since it is larger than the sum of its proper divisors (26222173275).

28083428325 is a wasteful number, since it uses less digits than its factorization.

28083428325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189779 (or 2189768 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 28083428325 in words is "twenty-eight billion, eighty-three million, four hundred twenty-eight thousand, three hundred twenty-five".