51225365427 has 8 divisors (see below), whose sum is σ = 68410829760. Its totient is φ = 34095072360.

The previous prime is 51225365407. The next prime is 51225365459. The reversal of 51225365427 is 72456352215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51225365427 - 2¹⁵ = 51225332659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51225365407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13790649 + ... + 13794362.

It is an arithmetic number, because the mean of its divisors is an integer number (8551353720).

Almost surely, 2^51225365427 is an apocalyptic number.

51225365427 is a deficient number, since it is larger than the sum of its proper divisors (17185464333).

51225365427 is a wasteful number, since it uses less digits than its factorization.

51225365427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27585633.

The product of its digits is 504000, while the sum is 42.

The spelling of 51225365427 in words is "fifty-one billion, two hundred twenty-five million, three hundred sixty-five thousand, four hundred twenty-seven".