25410661000 has 64 divisors (see below), whose sum is σ = 59793552000. Its totient is φ = 10107409600.

The previous prime is 25410660997. The next prime is 25410661013. The reversal of 25410661000 is 16601452.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 108021 + ... + 249979.

It is an arithmetic number, because the mean of its divisors is an integer number (934274250).

Almost surely, 2^25410661000 is an apocalyptic number.

25410661000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25410661000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29896776000).

25410661000 is an abundant number, since it is smaller than the sum of its proper divisors (34382891000).

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

25410661000 is a wasteful number, since it uses less digits than its factorization.

25410661000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142159 (or 142145 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 25410661000 in words is "twenty-five billion, four hundred ten million, six hundred sixty-one thousand".