1252168995 has 64 divisors (see below), whose sum is σ = 2506023936. Its totient is φ = 518676480.

The previous prime is 1252168969. The next prime is 1252168997. The reversal of 1252168995 is 5998612521.

It is a Cunningham number, because it is equal to 35386²-1.

It is not a de Polignac number, because 1252168995 - 2⁷ = 1252168867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1252168997) 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 63 ways as a sum of consecutive naturals, for example, 387627 + ... + 390843.

It is an arithmetic number, because the mean of its divisors is an integer number (39156624).

Almost surely, 2^1252168995 is an apocalyptic number.

1252168995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1252168995 is an abundant number, since it is smaller than the sum of its proper divisors (1253854941).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252168995 is a wasteful number, since it uses less digits than its factorization.

1252168995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3580.

The product of its digits is 388800, while the sum is 48.

The square root of 1252168995 is about 35385.9999858701. Note that the first 4 decimals coincide. The cubic root of 1252168995 is about 1077.8400460613.

The spelling of 1252168995 in words is "one billion, two hundred fifty-two million, one hundred sixty-eight thousand, nine hundred ninety-five".