25550010164 has 24 divisors (see below), whose sum is σ = 51157680000. Its totient is φ = 10937648736.

The previous prime is 25550010131. The next prime is 25550010179. The reversal of 25550010164 is 46101005552.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 489539 + ... + 539210.

It is an arithmetic number, because the mean of its divisors is an integer number (2131570000).

Almost surely, 2^25550010164 is an apocalyptic number.

It is an amenable number.

25550010164 is an abundant number, since it is smaller than the sum of its proper divisors (25607669836).

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

25550010164 is a wasteful number, since it uses less digits than its factorization.

25550010164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029647 (or 1029645 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 25550010164 in words is "twenty-five billion, five hundred fifty million, ten thousand, one hundred sixty-four".