53503515225 has 84 divisors (see below), whose sum is σ = 99732713052. Its totient is φ = 28460160000.

The previous prime is 53503515223. The next prime is 53503515269. The reversal of 53503515225 is 52251530535.

53503515225 is a `hidden beast` number, since 53 + 50 + 35 + 1 + 522 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1783203984 + 51720311241 = 42228^2 + 227421^2 .

It is not a de Polignac number, because 53503515225 - 2¹ = 53503515223 is a prime.

It is a super-2 number, since 2×53503515225² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53503515225.

It is not an unprimeable number, because it can be changed into a prime (53503515223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 7304565 + ... + 7311885.

It is an arithmetic number, because the mean of its divisors is an integer number (1187294203).

Almost surely, 2^53503515225 is an apocalyptic number.

It is an amenable number.

53503515225 is a deficient number, since it is larger than the sum of its proper divisors (46229197827).

53503515225 is an equidigital number, since it uses as much as digits as its factorization.

53503515225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7750 (or 7730 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 36.

The spelling of 53503515225 in words is "fifty-three billion, five hundred three million, five hundred fifteen thousand, two hundred twenty-five".