25130555556 has 12 divisors (see below), whose sum is σ = 58637962992. Its totient is φ = 8376851848.

The previous prime is 25130555519. The next prime is 25130555557. The reversal of 25130555556 is 65555503152.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (25130555557) 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, 1047106470 + ... + 1047106493.

It is an arithmetic number, because the mean of its divisors is an integer number (4886496916).

Almost surely, 2^25130555556 is an apocalyptic number.

It is an amenable number.

25130555556 is an abundant number, since it is smaller than the sum of its proper divisors (33507407436).

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

25130555556 is a wasteful number, since it uses less digits than its factorization.

25130555556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094212970 (or 2094212968 counting only the distinct ones).

The product of its (nonzero) digits is 562500, while the sum is 42.

The spelling of 25130555556 in words is "twenty-five billion, one hundred thirty million, five hundred fifty-five thousand, five hundred fifty-six".