25045221132 has 72 divisors (see below), whose sum is σ = 65521830192. Its totient is φ = 8060774400.

The previous prime is 25045221119. The next prime is 25045221137. The reversal of 25045221132 is 23112254052.

25045221132 is a `hidden beast` number, since 2 + 5 + 0 + 4 + 522 + 1 + 132 = 666.

It is a super-2 number, since 2×25045221132² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25045221096 and 25045221105.

It is not an unprimeable number, because it can be changed into a prime (25045221137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55707 + ... + 230637.

Almost surely, 2^25045221132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25045221132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32760915096).

25045221132 is an abundant number, since it is smaller than the sum of its proper divisors (40476609060).

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

25045221132 is a wasteful number, since it uses less digits than its factorization.

25045221132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175079 (or 175074 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 25045221132 its reverse (23112254052), we get a palindrome (48157475184).

The spelling of 25045221132 in words is "twenty-five billion, forty-five million, two hundred twenty-one thousand, one hundred thirty-two".