25828697 has 4 divisors (see below), whose sum is σ = 25841076. Its totient is φ = 25816320.

The previous prime is 25828679. The next prime is 25828717. The reversal of 25828697 is 79682852.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7027801 + 18800896 = 2651^2 + 4336^2 .

It is a cyclic number.

It is not a de Polignac number, because 25828697 - 2¹⁶ = 25763161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25828597) 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, 2204 + ... + 7517.

It is an arithmetic number, because the mean of its divisors is an integer number (6460269).

Almost surely, 2^25828697 is an apocalyptic number.

It is an amenable number.

25828697 is a deficient number, since it is larger than the sum of its proper divisors (12379).

25828697 is an equidigital number, since it uses as much as digits as its factorization.

25828697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12378.

The product of its digits is 483840, while the sum is 47.

The square root of 25828697 is about 5082.1941127824. The cubic root of 25828697 is about 295.5975515907.

The spelling of 25828697 in words is "twenty-five million, eight hundred twenty-eight thousand, six hundred ninety-seven".