13431648025 has 6 divisors (see below), whose sum is σ = 16655243582. Its totient is φ = 10745318400.

The previous prime is 13431648023. The next prime is 13431648029. The reversal of 13431648025 is 52084613431.

It can be written as a sum of positive squares in 3 ways, for example, as 2894009616 + 10537638409 = 53796^2 + 102653^2 .

It is not a de Polignac number, because 13431648025 - 2¹ = 13431648023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13431648023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 268632936 + ... + 268632985.

Almost surely, 2^13431648025 is an apocalyptic number.

It is an amenable number.

13431648025 is a deficient number, since it is larger than the sum of its proper divisors (3223595557).

13431648025 is an equidigital number, since it uses as much as digits as its factorization.

13431648025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537265931 (or 537265926 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 13431648025 in words is "thirteen billion, four hundred thirty-one million, six hundred forty-eight thousand, twenty-five".