51443502425 has 24 divisors (see below), whose sum is σ = 73825632000. Its totient is φ = 34829009280.

The previous prime is 51443502359. The next prime is 51443502427. The reversal of 51443502425 is 52420534415.

It is not a de Polignac number, because 51443502425 - 2⁸ = 51443502169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (51443502427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1846700 + ... + 1874349.

It is an arithmetic number, because the mean of its divisors is an integer number (3076068000).

Almost surely, 2^51443502425 is an apocalyptic number.

It is an amenable number.

51443502425 is a deficient number, since it is larger than the sum of its proper divisors (22382129575).

51443502425 is a wasteful number, since it uses less digits than its factorization.

51443502425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721145 (or 3721140 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 51443502425 in words is "fifty-one billion, four hundred forty-three million, five hundred two thousand, four hundred twenty-five".