1252021235 has 16 divisors (see below), whose sum is σ = 1517322240. Its totient is φ = 991736160.

The previous prime is 1252021229. The next prime is 1252021271. The reversal of 1252021235 is 5321202521.

It is not a de Polignac number, because 1252021235 - 2¹⁴ = 1252004851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1252021235.

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, 210026 + ... + 215904.

It is an arithmetic number, because the mean of its divisors is an integer number (94832640).

Almost surely, 2^1252021235 is an apocalyptic number.

1252021235 is a deficient number, since it is larger than the sum of its proper divisors (265301005).

1252021235 is a wasteful number, since it uses less digits than its factorization.

1252021235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6298.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1252021235 is about 35383.9120929272. The cubic root of 1252021235 is about 1077.7976481872.

Adding to 1252021235 its reverse (5321202521), we get a palindrome (6573223756).

The spelling of 1252021235 in words is "one billion, two hundred fifty-two million, twenty-one thousand, two hundred thirty-five".