51265025 has 18 divisors (see below), whose sum is σ = 73948950. Its totient is φ = 35152320.

The previous prime is 51265001. The next prime is 51265031. The reversal of 51265025 is 52056215.

It can be written as a sum of positive squares in 3 ways, for example, as 8976016 + 42289009 = 2996^2 + 6503^2 .

It is not a de Polignac number, because 51265025 - 2¹² = 51260929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51264985 and 51265003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19700 + ... + 22149.

It is an arithmetic number, because the mean of its divisors is an integer number (4108275).

Almost surely, 2^51265025 is an apocalyptic number.

It is an amenable number.

51265025 is a deficient number, since it is larger than the sum of its proper divisors (22683925).

51265025 is a wasteful number, since it uses less digits than its factorization.

51265025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41873 (or 41861 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 51265025 is about 7159.9598462561. The cubic root of 51265025 is about 371.4842377473.

The spelling of 51265025 in words is "fifty-one million, two hundred sixty-five thousand, twenty-five".