25605413 has 8 divisors (see below), whose sum is σ = 26244000. Its totient is φ = 24972688.

The previous prime is 25605409. The next prime is 25605431. The reversal of 25605413 is 31450652.

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

It is a cyclic number.

It is not a de Polignac number, because 25605413 - 2² = 25605409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25605493) 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, 8138 + ... + 10836.

It is an arithmetic number, because the mean of its divisors is an integer number (3280500).

Almost surely, 2^25605413 is an apocalyptic number.

It is an amenable number.

25605413 is a deficient number, since it is larger than the sum of its proper divisors (638587).

25605413 is a wasteful number, since it uses less digits than its factorization.

25605413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 25605413 is about 5060.1791470263. The cubic root of 25605413 is about 294.7432909924.

The spelling of 25605413 in words is "twenty-five million, six hundred five thousand, four hundred thirteen".