25563504212 has 12 divisors (see below), whose sum is σ = 44933209440. Its totient is φ = 12725444376.

The previous prime is 25563504209. The next prime is 25563504217. The reversal of 25563504212 is 21240536552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25563504217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14075912 + ... + 14077727.

It is an arithmetic number, because the mean of its divisors is an integer number (3744434120).

Almost surely, 2^25563504212 is an apocalyptic number.

It is an amenable number.

25563504212 is a deficient number, since it is larger than the sum of its proper divisors (19369705228).

25563504212 is a wasteful number, since it uses less digits than its factorization.

25563504212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28153870 (or 28153868 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 25563504212 in words is "twenty-five billion, five hundred sixty-three million, five hundred four thousand, two hundred twelve".