25502661063 has 24 divisors (see below), whose sum is σ = 41120576640. Its totient is φ = 15096710160.

The previous prime is 25502661047. The next prime is 25502661083. The reversal of 25502661063 is 36016620552.

It is a happy number.

25502661063 is a `hidden beast` number, since 25 + 502 + 66 + 10 + 63 = 666.

It is not a de Polignac number, because 25502661063 - 2⁴ = 25502661047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25502661013) 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 23 ways as a sum of consecutive naturals, for example, 2991123 + ... + 2999636.

It is an arithmetic number, because the mean of its divisors is an integer number (1713357360).

Almost surely, 2^25502661063 is an apocalyptic number.

25502661063 is a deficient number, since it is larger than the sum of its proper divisors (15617915577).

25502661063 is a wasteful number, since it uses less digits than its factorization.

25502661063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5990819 (or 5990816 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 25502661063 in words is "twenty-five billion, five hundred two million, six hundred sixty-one thousand, sixty-three".