13516425 has 36 divisors (see below), whose sum is σ = 26077324. Its totient is φ = 6652800.

The previous prime is 13516423. The next prime is 13516439. The reversal of 13516425 is 52461531.

13516425 is a `hidden beast` number, since 13 + 5 + 1 + 642 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 2064969 + 11451456 = 1437^2 + 3384^2 .

It is not a de Polignac number, because 13516425 - 2¹ = 13516423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13516423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 615 + ... + 5235.

Almost surely, 2^13516425 is an apocalyptic number.

13516425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13516425 is a deficient number, since it is larger than the sum of its proper divisors (12560899).

13516425 is a wasteful number, since it uses less digits than its factorization.

13516425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650 (or 4642 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 13516425 is about 3676.4690941173. The cubic root of 13516425 is about 238.2066855558.

Adding to 13516425 its reverse (52461531), we get a palindrome (65977956).

It can be divided in two parts, 1351 and 6425, that added together give a 5-th power (7776 = 6⁵).

The spelling of 13516425 in words is "thirteen million, five hundred sixteen thousand, four hundred twenty-five".