549503451225 has 315 divisors, whose sum is σ = 1145595106443. Its totient is φ = 261311857920.

The previous prime is 549503451193. The next prime is 549503451253. The reversal of 549503451225 is 522154305945.

The square root of 549503451225 is 741285.

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

549503451225 is a `hidden beast` number, since 5 + 495 + 0 + 34 + 5 + 122 + 5 = 666.

It can be written as a sum of positive squares in 7 ways, for example, as 59878579401 + 489624871824 = 244701^2 + 699732^2 .

It is not a de Polignac number, because 549503451225 - 2⁵ = 549503451193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 314 ways as a sum of consecutive naturals, for example, 28921234266 + ... + 28921234284.

Almost surely, 2^549503451225 is an apocalyptic number.

549503451225 is the 741285-th square number.

549503451225 is the 370643-rd centered octagonal number.

It is an amenable number.

549503451225 is an abundant number, since it is smaller than the sum of its proper divisors (596091655218).

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

549503451225 is an frugal number, since it uses more digits than its factorization.

549503451225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 549503451225 in words is "five hundred forty-nine billion, five hundred three million, four hundred fifty-one thousand, two hundred twenty-five".