1213052125 has 16 divisors (see below), whose sum is σ = 1521604656. Its totient is φ = 965496000.

The previous prime is 1213052101. The next prime is 1213052143. The reversal of 1213052125 is 5212503121.

It can be written as a sum of positive squares in 8 ways, for example, as 174794841 + 1038257284 = 13221^2 + 32222^2 .

It is not a de Polignac number, because 1213052125 - 2⁹ = 1213051613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213052096 and 1213052105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6 + ... + 49255.

It is an arithmetic number, because the mean of its divisors is an integer number (95100291).

Almost surely, 2^1213052125 is an apocalyptic number.

It is an amenable number.

1213052125 is a deficient number, since it is larger than the sum of its proper divisors (308552531).

1213052125 is an equidigital number, since it uses as much as digits as its factorization.

1213052125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49473 (or 49463 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1213052125 is about 34828.8978436011. The cubic root of 1213052125 is about 1066.4974490137.

Adding to 1213052125 its reverse (5212503121), we get a palindrome (6425555246).

The spelling of 1213052125 in words is "one billion, two hundred thirteen million, fifty-two thousand, one hundred twenty-five".