1212084225 has 81 divisors (see below), whose sum is σ = 2397644067. Its totient is φ = 584892000.

The previous prime is 1212084169. The next prime is 1212084229. The reversal of 1212084225 is 5224802121.

The square root of 1212084225 is 34815.

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., 436350321 + 775733904 = 20889^2 + 27852^2 .

It is not a de Polignac number, because 1212084225 - 2¹⁵ = 1212051457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212084229) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 5744370 + ... + 5744580.

Almost surely, 2^1212084225 is an apocalyptic number.

1212084225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1212084225 is the 34815-th square number.

1212084225 is the 17408-th centered octagonal number.

It is an amenable number.

1212084225 is a deficient number, since it is larger than the sum of its proper divisors (1185559842).

1212084225 is a wasteful number, since it uses less digits than its factorization.

1212084225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The cubic root of 1212084225 is about 1066.2137190924.

Adding to 1212084225 its reverse (5224802121), we get a palindrome (6436886346).

The spelling of 1212084225 in words is "one billion, two hundred twelve million, eighty-four thousand, two hundred twenty-five".