1213322025 has 24 divisors (see below), whose sum is σ = 2038919104. Its totient is φ = 636494400.

The previous prime is 1213322021. The next prime is 1213322029. The reversal of 1213322025 is 5202233121.

It is an interprime number because it is at equal distance from previous prime (1213322021) and next prime (1213322029).

It is not a de Polignac number, because 1213322025 - 2² = 1213322021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213321992 and 1213322010.

It is not an unprimeable number, because it can be changed into a prime (1213322021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128029 + ... + 137178.

Almost surely, 2^1213322025 is an apocalyptic number.

1213322025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1213322025 is a deficient number, since it is larger than the sum of its proper divisors (825597079).

1213322025 is a wasteful number, since it uses less digits than its factorization.

1213322025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265281 (or 265276 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1213322025 is about 34832.7722841579. The cubic root of 1213322025 is about 1066.5765405080.

Adding to 1213322025 its reverse (5202233121), we get a palindrome (6415555146).

The spelling of 1213322025 in words is "one billion, two hundred thirteen million, three hundred twenty-two thousand, twenty-five".