1220682474025 has 27 divisors (see below), whose sum is σ = 1760827969719. Its totient is φ = 837012894480.

The previous prime is 1220682474023. The next prime is 1220682474041. The reversal of 1220682474025 is 5204742860221.

The square root of 1220682474025 is 1104845.

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., 439445690649 + 781236783376 = 662907^2 + 883876^2 .

It is not a de Polignac number, because 1220682474025 - 2¹ = 1220682474023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220682474023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 38653792 + ... + 38685358.

Almost surely, 2^{1220682474025} is an apocalyptic number.

1220682474025 is the 1104845-th square number.

1220682474025 is the 552423-rd centered octagonal number.

It is an amenable number.

1220682474025 is a deficient number, since it is larger than the sum of its proper divisors (540145495694).

1220682474025 is an frugal number, since it uses more digits than its factorization.

1220682474025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63158 (or 31579 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 43.

The spelling of 1220682474025 in words is "one trillion, two hundred twenty billion, six hundred eighty-two million, four hundred seventy-four thousand, twenty-five".