1252201045 has 16 divisors (see below), whose sum is σ = 1600810560. Its totient is φ = 937039104.

The previous prime is 1252201043. The next prime is 1252201051. The reversal of 1252201045 is 5401022521.

It is a cyclic number.

It is not a de Polignac number, because 1252201045 - 2¹ = 1252201043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252201043) 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 15 ways as a sum of consecutive naturals, for example, 31335 + ... + 59044.

It is an arithmetic number, because the mean of its divisors is an integer number (100050660).

Almost surely, 2^1252201045 is an apocalyptic number.

It is an amenable number.

1252201045 is a deficient number, since it is larger than the sum of its proper divisors (348609515).

1252201045 is a wasteful number, since it uses less digits than its factorization.

1252201045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90564.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1252201045 is about 35386.4528456866. The cubic root of 1252201045 is about 1077.8492419656.

Adding to 1252201045 its reverse (5401022521), we get a palindrome (6653223566).

The spelling of 1252201045 in words is "one billion, two hundred fifty-two million, two hundred one thousand, forty-five".