53993493225 has 81 divisors (see below), whose sum is σ = 112548321093. Its totient is φ = 24671586240.

The previous prime is 53993493217. The next prime is 53993493289. The reversal of 53993493225 is 52239439935.

The square root of 53993493225 is 232365.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 15159273129 + 38834220096 = 123123^2 + 197064^2 .

It is not a de Polignac number, because 53993493225 - 2³ = 53993493217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 24397219 + ... + 24399431.

Almost surely, 2^53993493225 is an apocalyptic number.

53993493225 is the 232365-th square number.

53993493225 is the 116183-rd centered octagonal number.

It is an amenable number.

53993493225 is an abundant number, since it is smaller than the sum of its proper divisors (58554827868).

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

53993493225 is an equidigital number, since it uses as much as digits as its factorization.

53993493225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456 (or 2228 counting only the distinct ones).

The product of its digits is 7873200, while the sum is 54.

The spelling of 53993493225 in words is "fifty-three billion, nine hundred ninety-three million, four hundred ninety-three thousand, two hundred twenty-five".