25023404140 has 96 divisors (see below), whose sum is σ = 62691237504. Its totient is φ = 8210626560.

The previous prime is 25023404137. The next prime is 25023404143. The reversal of 25023404140 is 4140432052.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25023404137) and next prime (25023404143).

It is not an unprimeable number, because it can be changed into a prime (25023404143) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 276384 + ... + 355576.

It is an arithmetic number, because the mean of its divisors is an integer number (653033724).

Almost surely, 2^25023404140 is an apocalyptic number.

25023404140 is a gapful number since it is divisible by the number (20) 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 25023404140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31345618752).

25023404140 is an abundant number, since it is smaller than the sum of its proper divisors (37667833364).

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

25023404140 is a wasteful number, since it uses less digits than its factorization.

25023404140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79307 (or 79305 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 25023404140 its reverse (4140432052), we get a palindrome (29163836192).

The spelling of 25023404140 in words is "twenty-five billion, twenty-three million, four hundred four thousand, one hundred forty".