25253179816 has 32 divisors (see below), whose sum is σ = 49602528000. Its totient is φ = 12036862656.

The previous prime is 25253179789. The next prime is 25253179817. The reversal of 25253179816 is 61897135252.

It is a self number, because there is not a number n which added to its sum of digits gives 25253179816.

It is not an unprimeable number, because it can be changed into a prime (25253179817) by changing a digit.

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, 670596 + ... + 707251.

It is an arithmetic number, because the mean of its divisors is an integer number (1550079000).

Almost surely, 2^25253179816 is an apocalyptic number.

It is an amenable number.

25253179816 is a deficient number, since it is larger than the sum of its proper divisors (24349348184).

25253179816 is a wasteful number, since it uses less digits than its factorization.

25253179816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377961 (or 1377957 counting only the distinct ones).

The product of its digits is 907200, while the sum is 49.

The spelling of 25253179816 in words is "twenty-five billion, two hundred fifty-three million, one hundred seventy-nine thousand, eight hundred sixteen".