51425012 has 6 divisors (see below), whose sum is σ = 89993778. Its totient is φ = 25712504.

The previous prime is 51425009. The next prime is 51425041. The reversal of 51425012 is 21052415.

51425012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 29203216 + 22221796 = 5404^2 + 4714^2 .

It is a pancake number, because a pancake can be divided into 51425012 parts by 10141 straight cuts.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6428123 + ... + 6428130.

It is an arithmetic number, because the mean of its divisors is an integer number (14998963).

Almost surely, 2^51425012 is an apocalyptic number.

It is an amenable number.

51425012 is a deficient number, since it is larger than the sum of its proper divisors (38568766).

51425012 is a wasteful number, since it uses less digits than its factorization.

51425012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12856257 (or 12856255 counting only the distinct ones).

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

The square root of 51425012 is about 7171.1234824119. The cubic root of 51425012 is about 371.8702769638.

Adding to 51425012 its reverse (21052415), we get a palindrome (72477427).

The spelling of 51425012 in words is "fifty-one million, four hundred twenty-five thousand, twelve".