51157338127225 has 48 divisors (see below), whose sum is σ = 69918541551936. Its totient is φ = 36820094976000.

The previous prime is 51157338127223. The next prime is 51157338127241. The reversal of 51157338127225 is 52272183375115.

It is not a de Polignac number, because 51157338127225 - 2¹ = 51157338127223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51157338127223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1159193410 + ... + 1159237540.

It is an arithmetic number, because the mean of its divisors is an integer number (1456636282332).

Almost surely, 2^{51157338127225} is an apocalyptic number.

51157338127225 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51157338127225 is a deficient number, since it is larger than the sum of its proper divisors (18761203424711).

51157338127225 is a wasteful number, since it uses less digits than its factorization.

51157338127225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87706 (or 87701 counting only the distinct ones).

The product of its digits is 3528000, while the sum is 52.

The spelling of 51157338127225 in words is "fifty-one trillion, one hundred fifty-seven billion, three hundred thirty-eight million, one hundred twenty-seven thousand, two hundred twenty-five".