25609413 has 4 divisors (see below), whose sum is σ = 34145888. Its totient is φ = 17072940.

The previous prime is 25609411. The next prime is 25609421. The reversal of 25609413 is 31490652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25609413 - 2¹ = 25609411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25609411) 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 3 ways as a sum of consecutive naturals, for example, 4268233 + ... + 4268238.

It is an arithmetic number, because the mean of its divisors is an integer number (8536472).

Almost surely, 2^25609413 is an apocalyptic number.

It is an amenable number.

25609413 is a deficient number, since it is larger than the sum of its proper divisors (8536475).

25609413 is an equidigital number, since it uses as much as digits as its factorization.

25609413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8536474.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 25609413 is about 5060.5743745152. The cubic root of 25609413 is about 294.7586381611.

The spelling of 25609413 in words is "twenty-five million, six hundred nine thousand, four hundred thirteen".