25550250320 has 60 divisors (see below), whose sum is σ = 69103009044. Its totient is φ = 8760084480.

The previous prime is 25550250301. The next prime is 25550250329. The reversal of 25550250320 is 2305205552.

It can be written as a sum of positive squares in 2 ways, for example, as 6864453904 + 18685796416 = 82852^2 + 136696^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25550250329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3255041 + ... + 3262880.

Almost surely, 2^25550250320 is an apocalyptic number.

25550250320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25550250320 is an abundant number, since it is smaller than the sum of its proper divisors (43552758724).

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

25550250320 is a wasteful number, since it uses less digits than its factorization.

25550250320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6517948 (or 6517935 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 29.

Adding to 25550250320 its reverse (2305205552), we get a palindrome (27855455872).

The spelling of 25550250320 in words is "twenty-five billion, five hundred fifty million, two hundred fifty thousand, three hundred twenty".