25041653840 has 120 divisors (see below), whose sum is σ = 68585610240. Its totient is φ = 8476925184.

The previous prime is 25041653831. The next prime is 25041653881. The reversal of 25041653840 is 4835614052.

It is a junction number, because it is equal to n+sod(n) for n = 25041653794 and 25041653803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269249 + ... + 350111.

It is an arithmetic number, because the mean of its divisors is an integer number (571546752).

Almost surely, 2^25041653840 is an apocalyptic number.

25041653840 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 25041653840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34292805120).

25041653840 is an abundant number, since it is smaller than the sum of its proper divisors (43543956400).

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

25041653840 is a wasteful number, since it uses less digits than its factorization.

25041653840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80969 (or 80956 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 25041653840 in words is "twenty-five billion, forty-one million, six hundred fifty-three thousand, eight hundred forty".