25325140420 has 12 divisors (see below), whose sum is σ = 53182794924. Its totient is φ = 10130056160.

The previous prime is 25325140417. The next prime is 25325140427. The reversal of 25325140420 is 2404152352.

It can be written as a sum of positive squares in 2 ways, for example, as 10942415236 + 14382725184 = 104606^2 + 119928^2 .

It is not an unprimeable number, because it can be changed into a prime (25325140427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633128491 + ... + 633128530.

It is an arithmetic number, because the mean of its divisors is an integer number (4431899577).

Almost surely, 2^25325140420 is an apocalyptic number.

25325140420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25325140420 is an abundant number, since it is smaller than the sum of its proper divisors (27857654504).

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

25325140420 is a wasteful number, since it uses less digits than its factorization.

25325140420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266257030 (or 1266257028 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 25325140420 its reverse (2404152352), we get a palindrome (27729292772).

The spelling of 25325140420 in words is "twenty-five billion, three hundred twenty-five million, one hundred forty thousand, four hundred twenty".