273304156225 has 27 divisors (see below), whose sum is σ = 357737627043. Its totient is φ = 207098141040.

The previous prime is 273304156211. The next prime is 273304156249. The reversal of 273304156225 is 522651403372.

The square root of 273304156225 is 522785.

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

It can be written as a sum of positive squares in only one way, i.e., 98389496241 + 174914659984 = 313671^2 + 418228^2 .

It is not a de Polignac number, because 273304156225 - 2²¹ = 273302059073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 49661824 + ... + 49667326.

Almost surely, 2^273304156225 is an apocalyptic number.

273304156225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

273304156225 is the 522785-th square number.

273304156225 is the 261393-rd centered octagonal number.

It is an amenable number.

273304156225 is a deficient number, since it is larger than the sum of its proper divisors (84433470818).

273304156225 is an frugal number, since it uses more digits than its factorization.

273304156225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11054 (or 5527 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 40.

Adding to 273304156225 its reverse (522651403372), we get a palindrome (795955559597).

The spelling of 273304156225 in words is "two hundred seventy-three billion, three hundred four million, one hundred fifty-six thousand, two hundred twenty-five".