51225303540402 has 24 divisors (see below), whose sum is σ = 111099479833836. Its totient is φ = 17057974693536.

The previous prime is 51225303540401. The next prime is 51225303540403. The reversal of 51225303540402 is 20404530352215.

51225303540402 is a `hidden beast` number, since 5 + 1 + 22 + 53 + 0 + 3 + 540 + 40 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (51225303540401) and next prime (51225303540403).

It can be written as a sum of positive squares in 2 ways, for example, as 46081030466601 + 5144273073801 = 6788301^2 + 2268099^2 .

It is not an unprimeable number, because it can be changed into a prime (51225303540401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1427188773 + ... + 1427224664.

Almost surely, 2^{51225303540402} is an apocalyptic number.

51225303540402 is an abundant number, since it is smaller than the sum of its proper divisors (59874176293434).

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

51225303540402 is a wasteful number, since it uses less digits than its factorization.

51225303540402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854414442 (or 2854414439 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 51225303540402 its reverse (20404530352215), we get a palindrome (71629833892617).

The spelling of 51225303540402 in words is "fifty-one trillion, two hundred twenty-five billion, three hundred three million, five hundred forty thousand, four hundred two".