51025133252 has 6 divisors (see below), whose sum is σ = 89293983198. Its totient is φ = 25512566624.

The previous prime is 51025133249. The next prime is 51025133261. The reversal of 51025133252 is 25233152015.

It can be written as a sum of positive squares in only one way, i.e., 48711138436 + 2313994816 = 220706^2 + 48104^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6378141653 + ... + 6378141660.

It is an arithmetic number, because the mean of its divisors is an integer number (14882330533).

Almost surely, 2^51025133252 is an apocalyptic number.

It is an amenable number.

51025133252 is a deficient number, since it is larger than the sum of its proper divisors (38268849946).

51025133252 is a wasteful number, since it uses less digits than its factorization.

51025133252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12756283317 (or 12756283315 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 51025133252 its reverse (25233152015), we get a palindrome (76258285267).

The spelling of 51025133252 in words is "fifty-one billion, twenty-five million, one hundred thirty-three thousand, two hundred fifty-two".