25528823 has 4 divisors (see below), whose sum is σ = 25545288. Its totient is φ = 25512360.

The previous prime is 25528819. The next prime is 25528829. The reversal of 25528823 is 32882552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25528823 - 2² = 25528819 is a prime.

It is a super-3 number, since 3×25528823³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25528829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5633 + ... + 9098.

It is an arithmetic number, because the mean of its divisors is an integer number (6386322).

Almost surely, 2^25528823 is an apocalyptic number.

25528823 is a deficient number, since it is larger than the sum of its proper divisors (16465).

25528823 is a wasteful number, since it uses less digits than its factorization.

25528823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16464.

The product of its digits is 38400, while the sum is 35.

The square root of 25528823 is about 5052.6055654484. The cubic root of 25528823 is about 294.4491222811.

The spelling of 25528823 in words is "twenty-five million, five hundred twenty-eight thousand, eight hundred twenty-three".