25131026433 has 16 divisors (see below), whose sum is σ = 33921941760. Its totient is φ = 16547186064.

The previous prime is 25131026411. The next prime is 25131026491. The reversal of 25131026433 is 33462013152.

It is not a de Polignac number, because 25131026433 - 2⁸ = 25131026177 is a prime.

It is a super-2 number, since 2×25131026433² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25131026433.

It is not an unprimeable number, because it can be changed into a prime (25131026233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 933678 + ... + 960216.

It is an arithmetic number, because the mean of its divisors is an integer number (2120121360).

Almost surely, 2^25131026433 is an apocalyptic number.

It is an amenable number.

25131026433 is a deficient number, since it is larger than the sum of its proper divisors (8790915327).

25131026433 is a wasteful number, since it uses less digits than its factorization.

25131026433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30428.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 25131026433 its reverse (33462013152), we get a palindrome (58593039585).

The spelling of 25131026433 in words is "twenty-five billion, one hundred thirty-one million, twenty-six thousand, four hundred thirty-three".