51540441425 has 24 divisors (see below), whose sum is σ = 69731346432. Its totient is φ = 37477944000.

The previous prime is 51540441361. The next prime is 51540441443. The reversal of 51540441425 is 52414404515.

It is not a de Polignac number, because 51540441425 - 2⁶ = 51540441361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2415152 + ... + 2436398.

It is an arithmetic number, because the mean of its divisors is an integer number (2905472768).

Almost surely, 2^51540441425 is an apocalyptic number.

51540441425 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51540441425 is a deficient number, since it is larger than the sum of its proper divisors (18190905007).

51540441425 is a wasteful number, since it uses less digits than its factorization.

51540441425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30089 (or 30084 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

The spelling of 51540441425 in words is "fifty-one billion, five hundred forty million, four hundred forty-one thousand, four hundred twenty-five".