25404212132 has 24 divisors (see below), whose sum is σ = 48198507000. Its totient is φ = 11646326016.

The previous prime is 25404212129. The next prime is 25404212189. The reversal of 25404212132 is 23121240452.

It can be written as a sum of positive squares in 4 ways, for example, as 1717770916 + 23686441216 = 41446^2 + 153904^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1631657 + ... + 1647152.

It is an arithmetic number, because the mean of its divisors is an integer number (2008271125).

Almost surely, 2^25404212132 is an apocalyptic number.

It is an amenable number.

25404212132 is a deficient number, since it is larger than the sum of its proper divisors (22794294868).

25404212132 is a wasteful number, since it uses less digits than its factorization.

25404212132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278975 (or 3278973 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 25404212132 its reverse (23121240452), we get a palindrome (48525452584).

The spelling of 25404212132 in words is "twenty-five billion, four hundred four million, two hundred twelve thousand, one hundred thirty-two".