25815825016 has 16 divisors (see below), whose sum is σ = 48525387840. Its totient is φ = 12875721600.

The previous prime is 25815824981. The next prime is 25815825107. The reversal of 25815825016 is 61052851852.

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 3 ways as a sum of consecutive naturals, for example, 4020456 + ... + 4026871.

It is an arithmetic number, because the mean of its divisors is an integer number (3032836740).

Almost surely, 2^25815825016 is an apocalyptic number.

It is an amenable number.

25815825016 is a deficient number, since it is larger than the sum of its proper divisors (22709562824).

25815825016 is a wasteful number, since it uses less digits than its factorization.

25815825016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8047734 (or 8047730 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 43.

The spelling of 25815825016 in words is "twenty-five billion, eight hundred fifteen million, eight hundred twenty-five thousand, sixteen".