25133331220 has 48 divisors (see below), whose sum is σ = 55094860800. Its totient is φ = 9619695360.

The previous prime is 25133331217. The next prime is 25133331227. The reversal of 25133331220 is 2213333152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25133331227) 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, 172560 + ... + 282919.

It is an arithmetic number, because the mean of its divisors is an integer number (1147809600).

Almost surely, 2^25133331220 is an apocalyptic number.

25133331220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25133331220 is an abundant number, since it is smaller than the sum of its proper divisors (29961529580).

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

25133331220 is a wasteful number, since it uses less digits than its factorization.

25133331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455608 (or 455606 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 25133331220 its reverse (2213333152), we get a palindrome (27346664372).

The spelling of 25133331220 in words is "twenty-five billion, one hundred thirty-three million, three hundred thirty-one thousand, two hundred twenty".