25205435332 has 48 divisors (see below), whose sum is σ = 55079902080. Its totient is φ = 9804902400.

The previous prime is 25205435317. The next prime is 25205435341. The reversal of 25205435332 is 23353450252.

It is a happy 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, 133594 + ... + 261262.

It is an arithmetic number, because the mean of its divisors is an integer number (1147497960).

Almost surely, 2^25205435332 is an apocalyptic number.

25205435332 is a gapful number since it is divisible by the number (22) 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 25205435332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27539951040).

25205435332 is an abundant number, since it is smaller than the sum of its proper divisors (29874466748).

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

25205435332 is a wasteful number, since it uses less digits than its factorization.

25205435332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128332 (or 128330 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 34.

Adding to 25205435332 its reverse (23353450252), we get a palindrome (48558885584).

The spelling of 25205435332 in words is "twenty-five billion, two hundred five million, four hundred thirty-five thousand, three hundred thirty-two".