25440123332 has 24 divisors (see below), whose sum is σ = 48073422936. Its totient is φ = 11710107648.

The previous prime is 25440123253. The next prime is 25440123349. The reversal of 25440123332 is 23332104452.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 306460036 + 25133663296 = 17506^2 + 158536^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25440123295 and 25440123304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636413 + ... + 675204.

It is an arithmetic number, because the mean of its divisors is an integer number (2003059289).

Almost surely, 2^25440123332 is an apocalyptic number.

It is an amenable number.

25440123332 is a deficient number, since it is larger than the sum of its proper divisors (22633299604).

25440123332 is a wasteful number, since it uses less digits than its factorization.

25440123332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312007 (or 1312005 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 25440123332 its reverse (23332104452), we get a palindrome (48772227784).

The spelling of 25440123332 in words is "twenty-five billion, four hundred forty million, one hundred twenty-three thousand, three hundred thirty-two".