25553663106 has 32 divisors (see below), whose sum is σ = 51986707200. Its totient is φ = 8371397520.

The previous prime is 25553663089. The next prime is 25553663123. The reversal of 25553663106 is 60136635552.

It is an interprime number because it is at equal distance from previous prime (25553663089) and next prime (25553663123).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2039521 + ... + 2052011.

It is an arithmetic number, because the mean of its divisors is an integer number (1624584600).

Almost surely, 2^25553663106 is an apocalyptic number.

25553663106 is an abundant number, since it is smaller than the sum of its proper divisors (26433044094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25553663106 is a wasteful number, since it uses less digits than its factorization.

25553663106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18334.

The product of its (nonzero) digits is 486000, while the sum is 42.

The spelling of 25553663106 in words is "twenty-five billion, five hundred fifty-three million, six hundred sixty-three thousand, one hundred six".