25385813 has 8 divisors (see below), whose sum is σ = 26587008. Its totient is φ = 24192784.

The previous prime is 25385797. The next prime is 25385819. The reversal of 25385813 is 31858352.

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 25385813 - 2⁴ = 25385797 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 (25385819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4856 + ... + 8622.

It is an arithmetic number, because the mean of its divisors is an integer number (3323376).

Almost surely, 2^25385813 is an apocalyptic number.

25385813 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25385813 is a deficient number, since it is larger than the sum of its proper divisors (1201195).

25385813 is a wasteful number, since it uses less digits than its factorization.

25385813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083.

The product of its digits is 28800, while the sum is 35.

The square root of 25385813 is about 5038.4335859471. The cubic root of 25385813 is about 293.8982672063.

The spelling of 25385813 in words is "twenty-five million, three hundred eighty-five thousand, eight hundred thirteen".