51906780025 has 48 divisors (see below), whose sum is σ = 67468681728. Its totient is φ = 39573248000.

The previous prime is 51906780011. The next prime is 51906780031. The reversal of 51906780025 is 52008760915.

It is not a de Polignac number, because 51906780025 - 2³³ = 43316845433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42441564 + ... + 42442786.

It is an arithmetic number, because the mean of its divisors is an integer number (1405597536).

Almost surely, 2^51906780025 is an apocalyptic number.

It is an amenable number.

51906780025 is a deficient number, since it is larger than the sum of its proper divisors (15561901703).

51906780025 is a wasteful number, since it uses less digits than its factorization.

51906780025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202 (or 2197 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 51906780025 in words is "fifty-one billion, nine hundred six million, seven hundred eighty thousand, twenty-five".