25604545 has 8 divisors (see below), whose sum is σ = 30787560. Its totient is φ = 20442240.

The previous prime is 25604539. The next prime is 25604561. The reversal of 25604545 is 54540652.

It can be written as a sum of positive squares in 4 ways, for example, as 4892944 + 20711601 = 2212^2 + 4551^2 .

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

It is not a de Polignac number, because 25604545 - 2¹³ = 25596353 is a prime.

25604545 is a modest number, since divided by 4545 gives 2560 as remainder.

It is an unprimeable number.

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, 2310 + ... + 7519.

It is an arithmetic number, because the mean of its divisors is an integer number (3848445).

Almost surely, 2^25604545 is an apocalyptic number.

It is an amenable number.

25604545 is a deficient number, since it is larger than the sum of its proper divisors (5183015).

25604545 is an equidigital number, since it uses as much as digits as its factorization.

25604545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10355.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 25604545 is about 5060.0933785850. The cubic root of 25604545 is about 294.7399604458.

The spelling of 25604545 in words is "twenty-five million, six hundred four thousand, five hundred forty-five".