1252105635 has 16 divisors (see below), whose sum is σ = 2185493760. Its totient is φ = 607081440.

The previous prime is 1252105627. The next prime is 1252105637. The reversal of 1252105635 is 5365012521.

It is a happy number.

It is not a de Polignac number, because 1252105635 - 2³ = 1252105627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1252105637) 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, 3794095 + ... + 3794424.

It is an arithmetic number, because the mean of its divisors is an integer number (136593360).

Almost surely, 2^1252105635 is an apocalyptic number.

1252105635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1252105635 is a deficient number, since it is larger than the sum of its proper divisors (933388125).

1252105635 is a wasteful number, since it uses less digits than its factorization.

1252105635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7588538.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1252105635 is about 35385.1047052287. The cubic root of 1252105635 is about 1077.8218661145.

The spelling of 1252105635 in words is "one billion, two hundred fifty-two million, one hundred five thousand, six hundred thirty-five".