13625557 has 4 divisors (see below), whose sum is σ = 14864256. Its totient is φ = 12386860.

The previous prime is 13625543. The next prime is 13625569. The reversal of 13625557 is 75552631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13625557 - 2¹¹ = 13623509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13625537) 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, 619333 + ... + 619354.

It is an arithmetic number, because the mean of its divisors is an integer number (3716064).

Almost surely, 2^13625557 is an apocalyptic number.

It is an amenable number.

13625557 is a deficient number, since it is larger than the sum of its proper divisors (1238699).

13625557 is a wasteful number, since it uses less digits than its factorization.

13625557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238698.

The product of its digits is 31500, while the sum is 34.

The square root of 13625557 is about 3691.2812138877. The cubic root of 13625557 is about 238.8460636972.

The spelling of 13625557 in words is "thirteen million, six hundred twenty-five thousand, five hundred fifty-seven".