51425310220 has 48 divisors (see below), whose sum is σ = 108972864000. Its totient is φ = 20383962560.

The previous prime is 51425310113. The next prime is 51425310227. The reversal of 51425310220 is 2201352415.

It is not an unprimeable number, because it can be changed into a prime (51425310227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1870131 + ... + 1897429.

It is an arithmetic number, because the mean of its divisors is an integer number (2270268000).

Almost surely, 2^51425310220 is an apocalyptic number.

It is an amenable number.

51425310220 is an abundant number, since it is smaller than the sum of its proper divisors (57547553780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51425310220 is a wasteful number, since it uses less digits than its factorization.

51425310220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28158 (or 28156 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 51425310220 its reverse (2201352415), we get a palindrome (53626662635).

The spelling of 51425310220 in words is "fifty-one billion, four hundred twenty-five million, three hundred ten thousand, two hundred twenty".