13625977 has 4 divisors (see below), whose sum is σ = 13633956. Its totient is φ = 13618000.

The previous prime is 13625951. The next prime is 13626001. The reversal of 13625977 is 77952631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10949481 + 2676496 = 3309^2 + 1636^2 .

It is a cyclic number.

It is not a de Polignac number, because 13625977 - 2⁷ = 13625849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13625917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274 + ... + 5227.

It is an arithmetic number, because the mean of its divisors is an integer number (3408489).

Almost surely, 2^13625977 is an apocalyptic number.

It is an amenable number.

13625977 is a deficient number, since it is larger than the sum of its proper divisors (7979).

13625977 is an equidigital number, since it uses as much as digits as its factorization.

13625977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7978.

The product of its digits is 79380, while the sum is 40.

The square root of 13625977 is about 3691.3381042652. The cubic root of 13625977 is about 238.8485177697.

The spelling of 13625977 in words is "thirteen million, six hundred twenty-five thousand, nine hundred seventy-seven".