51435250425 has 192 divisors, whose sum is σ = 106305696000. Its totient is φ = 24207482880.

The previous prime is 51435250421. The next prime is 51435250429. The reversal of 51435250425 is 52405253415.

51435250425 is a `hidden beast` number, since 5 + 143 + 5 + 2 + 504 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (51435250421) and next prime (51435250429).

It is not a de Polignac number, because 51435250425 - 2² = 51435250421 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51435250425.

It is not an unprimeable number, because it can be changed into a prime (51435250421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 27227881 + ... + 27229769.

It is an arithmetic number, because the mean of its divisors is an integer number (553675500).

Almost surely, 2^51435250425 is an apocalyptic number.

It is an amenable number.

51435250425 is an abundant number, since it is smaller than the sum of its proper divisors (54870445575).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51435250425 is a wasteful number, since it uses less digits than its factorization.

51435250425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057 (or 2046 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 51435250425 in words is "fifty-one billion, four hundred thirty-five million, two hundred fifty thousand, four hundred twenty-five".