25131026432 has 108 divisors (see below), whose sum is σ = 52386593805. Its totient is φ = 12052561920.

The previous prime is 25131026411. The next prime is 25131026491. The reversal of 25131026432 is 23462013152.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 15871968256 + 9259058176 = 125984^2 + 96224^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=112096.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25131026395 and 25131026404.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 222398408 + ... + 222398520.

Almost surely, 2^25131026432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25131026432

25131026432 is an abundant number, since it is smaller than the sum of its proper divisors (27255567373).

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

25131026432 is an frugal number, since it uses more digits than its factorization.

25131026432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 25131026432 its reverse (23462013152), we get a palindrome (48593039584).

The spelling of 25131026432 in words is "twenty-five billion, one hundred thirty-one million, twenty-six thousand, four hundred thirty-two".