25604493 has 8 divisors (see below), whose sum is σ = 34169856. Its totient is φ = 17054400.

The previous prime is 25604473. The next prime is 25604507. The reversal of 25604493 is 39440652.

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

It is not a de Polignac number, because 25604493 - 2¹² = 25600397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25604473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948 + ... + 7218.

It is an arithmetic number, because the mean of its divisors is an integer number (4271232).

Almost surely, 2^25604493 is an apocalyptic number.

It is an amenable number.

25604493 is a deficient number, since it is larger than the sum of its proper divisors (8565363).

25604493 is a wasteful number, since it uses less digits than its factorization.

25604493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7635.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 25604493 is about 5060.0882403373. The cubic root of 25604493 is about 294.7397609175.

The spelling of 25604493 in words is "twenty-five million, six hundred four thousand, four hundred ninety-three".