13440225525 has 12 divisors (see below), whose sum is σ = 22221172992. Its totient is φ = 7168120240.

The previous prime is 13440225511. The next prime is 13440225563. The reversal of 13440225525 is 52552204431.

It is a happy number.

It is not a de Polignac number, because 13440225525 - 2⁴ = 13440225509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89601429 + ... + 89601578.

It is an arithmetic number, because the mean of its divisors is an integer number (1851764416).

Almost surely, 2^13440225525 is an apocalyptic number.

13440225525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13440225525 is a deficient number, since it is larger than the sum of its proper divisors (8780947467).

13440225525 is a wasteful number, since it uses less digits than its factorization.

13440225525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179203020 (or 179203015 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 13440225525 its reverse (52552204431), we get a palindrome (65992429956).

The spelling of 13440225525 in words is "thirteen billion, four hundred forty million, two hundred twenty-five thousand, five hundred twenty-five".