28553025 has 12 divisors (see below), whose sum is σ = 47207792. Its totient is φ = 15228240.

The previous prime is 28553009. The next prime is 28553027. The reversal of 28553025 is 52035582.

It is not a de Polignac number, because 28553025 - 2⁴ = 28553009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28552983 and 28553001.

It is not an unprimeable number, because it can be changed into a prime (28553027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190279 + ... + 190428.

Almost surely, 2^28553025 is an apocalyptic number.

28553025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28553025 is a deficient number, since it is larger than the sum of its proper divisors (18654767).

28553025 is a wasteful number, since it uses less digits than its factorization.

28553025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380720 (or 380715 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 28553025 is about 5343.5030644700. The cubic root of 28553025 is about 305.6450559979.

The spelling of 28553025 in words is "twenty-eight million, five hundred fifty-three thousand, twenty-five".