51404815023825 has 24 divisors (see below), whose sum is σ = 85099813506400. Its totient is φ = 27380249948160.

The previous prime is 51404815023823. The next prime is 51404815023841. The reversal of 51404815023825 is 52832051840415.

It is not a de Polignac number, because 51404815023825 - 2¹ = 51404815023823 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51404815023823) 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, 445584415 + ... + 445699764.

Almost surely, 2^{51404815023825} is an apocalyptic number.

It is an amenable number.

51404815023825 is a deficient number, since it is larger than the sum of its proper divisors (33694998482575).

51404815023825 is a wasteful number, since it uses less digits than its factorization.

51404815023825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891284961 (or 891284956 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 48.

The spelling of 51404815023825 in words is "fifty-one trillion, four hundred four billion, eight hundred fifteen million, twenty-three thousand, eight hundred twenty-five".