1252801165 has 32 divisors (see below), whose sum is σ = 1877001984. Its totient is φ = 779850240.

The previous prime is 1252801141. The next prime is 1252801181. The reversal of 1252801165 is 5611082521.

It is not a de Polignac number, because 1252801165 - 2⁵ = 1252801133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328047 + ... + 331843.

It is an arithmetic number, because the mean of its divisors is an integer number (58656312).

Almost surely, 2^1252801165 is an apocalyptic number.

It is an amenable number.

1252801165 is a deficient number, since it is larger than the sum of its proper divisors (624200819).

1252801165 is a wasteful number, since it uses less digits than its factorization.

1252801165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 1252801165 is about 35394.9313461688. The cubic root of 1252801165 is about 1078.0214016424.

Adding to 1252801165 its reverse (5611082521), we get a palindrome (6863883686).

The spelling of 1252801165 in words is "one billion, two hundred fifty-two million, eight hundred one thousand, one hundred sixty-five".