1252752789 has 16 divisors (see below), whose sum is σ = 1678786560. Its totient is φ = 830956080.

The previous prime is 1252752779. The next prime is 1252752803. The reversal of 1252752789 is 9872572521.

It is not a de Polignac number, because 1252752789 - 2¹⁹ = 1252228501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252752719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566524 + ... + 568730.

It is an arithmetic number, because the mean of its divisors is an integer number (104924160).

Almost surely, 2^1252752789 is an apocalyptic number.

It is an amenable number.

1252752789 is a deficient number, since it is larger than the sum of its proper divisors (426033771).

1252752789 is a wasteful number, since it uses less digits than its factorization.

1252752789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080.

The product of its digits is 705600, while the sum is 48.

The square root of 1252752789 is about 35394.2479648883. The cubic root of 1252752789 is about 1078.0075257947.

The spelling of 1252752789 in words is "one billion, two hundred fifty-two million, seven hundred fifty-two thousand, seven hundred eighty-nine".