13625247 has 8 divisors (see below), whose sum is σ = 18222256. Its totient is φ = 9055872.

The previous prime is 13625237. The next prime is 13625251. The reversal of 13625247 is 74252631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13625247 - 2¹² = 13621151 is a prime.

It is a super-2 number, since 2×13625247² = 371294711622018, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13625237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5728 + ... + 7749.

It is an arithmetic number, because the mean of its divisors is an integer number (2277782).

Almost surely, 2^13625247 is an apocalyptic number.

13625247 is a deficient number, since it is larger than the sum of its proper divisors (4597009).

13625247 is a wasteful number, since it uses less digits than its factorization.

13625247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13817.

The product of its digits is 10080, while the sum is 30.

The square root of 13625247 is about 3691.2392228085. The cubic root of 13625247 is about 238.8442523256.

Adding to 13625247 its reverse (74252631), we get a palindrome (87877878).

The spelling of 13625247 in words is "thirteen million, six hundred twenty-five thousand, two hundred forty-seven".