25001356565 has 8 divisors (see below), whose sum is σ = 30042229920. Its totient is φ = 19974017232.

The previous prime is 25001356553. The next prime is 25001356607. The reversal of 25001356565 is 56565310052.

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 25001356565 - 2¹² = 25001352469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3379439 + ... + 3386828.

It is an arithmetic number, because the mean of its divisors is an integer number (3755278740).

Almost surely, 2^25001356565 is an apocalyptic number.

It is an amenable number.

25001356565 is a deficient number, since it is larger than the sum of its proper divisors (5040873355).

25001356565 is an equidigital number, since it uses as much as digits as its factorization.

25001356565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6767011.

The product of its (nonzero) digits is 135000, while the sum is 38.

The spelling of 25001356565 in words is "twenty-five billion, one million, three hundred fifty-six thousand, five hundred sixty-five".