25535314220 has 48 divisors (see below), whose sum is σ = 57837114720. Its totient is φ = 9414053376.

The previous prime is 25535314201. The next prime is 25535314229. The reversal of 25535314220 is 2241353552.

It is not an unprimeable number, because it can be changed into a prime (25535314229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96824 + ... + 245856.

It is an arithmetic number, because the mean of its divisors is an integer number (1204939890).

Almost surely, 2^25535314220 is an apocalyptic number.

25535314220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25535314220 is an abundant number, since it is smaller than the sum of its proper divisors (32301800500).

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

25535314220 is a wasteful number, since it uses less digits than its factorization.

25535314220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149714 (or 149712 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 25535314220 its reverse (2241353552), we get a palindrome (27776667772).

The spelling of 25535314220 in words is "twenty-five billion, five hundred thirty-five million, three hundred fourteen thousand, two hundred twenty".