28025497 has 8 divisors (see below), whose sum is σ = 28613312. Its totient is φ = 27442800.

The previous prime is 28025483. The next prime is 28025507. The reversal of 28025497 is 79452082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28025497 - 2¹⁵ = 27992729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28025407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10972 + ... + 13282.

It is an arithmetic number, because the mean of its divisors is an integer number (3576664).

Almost surely, 2^28025497 is an apocalyptic number.

It is an amenable number.

28025497 is a deficient number, since it is larger than the sum of its proper divisors (587815).

28025497 is a wasteful number, since it uses less digits than its factorization.

28025497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 28025497 is about 5293.9113139530. The cubic root of 28025497 is about 303.7510405447.

The spelling of 28025497 in words is "twenty-eight million, twenty-five thousand, four hundred ninety-seven".