25241320320 has 128 divisors (see below), whose sum is σ = 80503092000. Its totient is φ = 6727139328.

The previous prime is 25241320297. The next prime is 25241320361. The reversal of 25241320320 is 2302314252.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5160436 + ... + 5165324.

Almost surely, 2^25241320320 is an apocalyptic number.

25241320320 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 25241320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40251546000).

25241320320 is an abundant number, since it is smaller than the sum of its proper divisors (55261771680).

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

25241320320 is a wasteful number, since it uses less digits than its factorization.

25241320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7600 (or 7588 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 25241320320 its reverse (2302314252), we get a palindrome (27543634572).

The spelling of 25241320320 in words is "twenty-five billion, two hundred forty-one million, three hundred twenty thousand, three hundred twenty".