51012425 has 6 divisors (see below), whose sum is σ = 63255438. Its totient is φ = 40809920.

The previous prime is 51012419. The next prime is 51012439. The reversal of 51012425 is 52421015.

It can be written as a sum of positive squares in 3 ways, for example, as 4826809 + 46185616 = 2197^2 + 6796^2 .

It is not a de Polignac number, because 51012425 - 2¹² = 51008329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51012397 and 51012406.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 1020224 + ... + 1020273.

It is an arithmetic number, because the mean of its divisors is an integer number (10542573).

Almost surely, 2^51012425 is an apocalyptic number.

It is an amenable number.

51012425 is a deficient number, since it is larger than the sum of its proper divisors (12243013).

51012425 is a wasteful number, since it uses less digits than its factorization.

51012425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040507 (or 2040502 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 51012425 is about 7142.2982995672. The cubic root of 51012425 is about 370.8730903243.

The spelling of 51012425 in words is "fifty-one million, twelve thousand, four hundred twenty-five".