13625569 has 2 divisors, whose sum is σ = 13625570. Its totient is φ = 13625568.

The previous prime is 13625543. The next prime is 13625587. The reversal of 13625569 is 96552631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9381969 + 4243600 = 3063^2 + 2060^2 .

It is a cyclic number.

It is not a de Polignac number, because 13625569 - 2⁵ = 13625537 is a prime.

It is a super-2 number, since 2×13625569² = 371312261147522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13625069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6812784 + 6812785.

It is an arithmetic number, because the mean of its divisors is an integer number (6812785).

Almost surely, 2^13625569 is an apocalyptic number.

It is an amenable number.

13625569 is a deficient number, since it is larger than the sum of its proper divisors (1).

13625569 is an equidigital number, since it uses as much as digits as its factorization.

13625569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 37.

The square root of 13625569 is about 3691.2828393392. The cubic root of 13625569 is about 238.8461338142.

The spelling of 13625569 in words is "thirteen million, six hundred twenty-five thousand, five hundred sixty-nine".