25896521 has 8 divisors (see below), whose sum is σ = 29630784. Its totient is φ = 22170960.

The previous prime is 25896509. The next prime is 25896527. The reversal of 25896521 is 12569852.

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

It is not a de Polignac number, because 25896521 - 2¹⁰ = 25895497 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25896527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6551 + ... + 9731.

It is an arithmetic number, because the mean of its divisors is an integer number (3703848).

Almost surely, 2^25896521 is an apocalyptic number.

It is an amenable number.

25896521 is a deficient number, since it is larger than the sum of its proper divisors (3734263).

25896521 is a wasteful number, since it uses less digits than its factorization.

25896521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4351.

The product of its digits is 43200, while the sum is 38.

The square root of 25896521 is about 5088.8624465592. The cubic root of 25896521 is about 295.8560636021.

The spelling of 25896521 in words is "twenty-five million, eight hundred ninety-six thousand, five hundred twenty-one".