25611025000 has 96 divisors (see below), whose sum is σ = 65479246560. Its totient is φ = 9313000000.

The previous prime is 25611024979. The next prime is 25611025001. The reversal of 25611025000 is 52011652.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (25611025001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228435 + ... + 321565.

It is an arithmetic number, because the mean of its divisors is an integer number (682075485).

Almost surely, 2^25611025000 is an apocalyptic number.

25611025000 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 25611025000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32739623280).

25611025000 is an abundant number, since it is smaller than the sum of its proper divisors (39868221560).

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

25611025000 is an equidigital number, since it uses as much as digits as its factorization.

25611025000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93173 (or 93149 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 25611025000 its reverse (52011652), we get a palindrome (25663036652).

The spelling of 25611025000 in words is "twenty-five billion, six hundred eleven million, twenty-five thousand".