25668445 has 16 divisors (see below), whose sum is σ = 33763392. Its totient is φ = 18578560.

The previous prime is 25668427. The next prime is 25668473. The reversal of 25668445 is 54486652.

It is not a de Polignac number, because 25668445 - 2⁹ = 25667933 is a prime.

It is a super-3 number, since 3×25668445³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25668398 and 25668407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11814 + ... + 13816.

It is an arithmetic number, because the mean of its divisors is an integer number (2110212).

Almost surely, 2^25668445 is an apocalyptic number.

It is an amenable number.

25668445 is a deficient number, since it is larger than the sum of its proper divisors (8094947).

25668445 is a wasteful number, since it uses less digits than its factorization.

25668445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252.

The product of its digits is 230400, while the sum is 40.

The square root of 25668445 is about 5066.4035567649. The cubic root of 25668445 is about 294.9849460862.

It can be divided in two parts, 2566 and 8445, that added together give a palindrome (11011).

The spelling of 25668445 in words is "twenty-five million, six hundred sixty-eight thousand, four hundred forty-five".