13642344225 has 18 divisors (see below), whose sum is σ = 24434954726. Its totient is φ = 7275916800.

The previous prime is 13642344197. The next prime is 13642344239. The reversal of 13642344225 is 52244324631.

13642344225 is a `hidden beast` number, since 1 + 3 + 6 + 423 + 4 + 4 + 225 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 3029841936 + 10612502289 = 55044^2 + 103017^2 .

It is not a de Polignac number, because 13642344225 - 2¹¹ = 13642342177 is a prime.

It is a super-2 number, since 2×13642344225² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13642344225.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 30316096 + ... + 30316545.

Almost surely, 2^13642344225 is an apocalyptic number.

13642344225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13642344225 is a deficient number, since it is larger than the sum of its proper divisors (10792610501).

13642344225 is a wasteful number, since it uses less digits than its factorization.

13642344225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60632657 (or 60632649 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

Adding to 13642344225 its reverse (52244324631), we get a palindrome (65886668856).

The spelling of 13642344225 in words is "thirteen billion, six hundred forty-two million, three hundred forty-four thousand, two hundred twenty-five".