51267625 has 8 divisors (see below), whose sum is σ = 63982152. Its totient is φ = 41014000.

The previous prime is 51267611. The next prime is 51267661. The reversal of 51267625 is 52676215.

It can be written as a sum of positive squares in 4 ways, for example, as 4194304 + 47073321 = 2048^2 + 6861^2 .

It is not a de Polignac number, because 51267625 - 2⁹ = 51267113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204946 + ... + 205195.

It is an arithmetic number, because the mean of its divisors is an integer number (7997769).

Almost surely, 2^51267625 is an apocalyptic number.

It is an amenable number.

51267625 is a deficient number, since it is larger than the sum of its proper divisors (12714527).

51267625 is an equidigital number, since it uses as much as digits as its factorization.

51267625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410156 (or 410146 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 51267625 is about 7160.1414092181. The cubic root of 51267625 is about 371.4905178098.

The spelling of 51267625 in words is "fifty-one million, two hundred sixty-seven thousand, six hundred twenty-five".