51325425031420 has 24 divisors (see below), whose sum is σ = 107957517620400. Its totient is φ = 20497003335552.

The previous prime is 51325425031409. The next prime is 51325425031451. The reversal of 51325425031420 is 2413052452315.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51325425031420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2072904625 + ... + 2072929384.

It is an arithmetic number, because the mean of its divisors is an integer number (4498229900850).

Almost surely, 2^{51325425031420} is an apocalyptic number.

It is an amenable number.

51325425031420 is an abundant number, since it is smaller than the sum of its proper divisors (56632092588980).

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

51325425031420 is a wasteful number, since it uses less digits than its factorization.

51325425031420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145834637 (or 4145834635 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 51325425031420 its reverse (2413052452315), we get a palindrome (53738477483735).

The spelling of 51325425031420 in words is "fifty-one trillion, three hundred twenty-five billion, four hundred twenty-five million, thirty-one thousand, four hundred twenty".