252027196409 has 2 divisors, whose sum is σ = 252027196410. Its totient is φ = 252027196408.

The previous prime is 252027196403. The next prime is 252027196427. The reversal of 252027196409 is 904691720252.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238995832384 + 13031364025 = 488872^2 + 114155^2 .

It is a cyclic number.

It is not a de Polignac number, because 252027196409 - 2³² = 247732229113 is a prime.

It is not a weakly prime, because it can be changed into another prime (252027196403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126013598204 + 126013598205.

It is an arithmetic number, because the mean of its divisors is an integer number (126013598205).

Almost surely, 2^252027196409 is an apocalyptic number.

It is an amenable number.

252027196409 is a deficient number, since it is larger than the sum of its proper divisors (1).

252027196409 is an equidigital number, since it uses as much as digits as its factorization.

252027196409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 252027196409 in words is "two hundred fifty-two billion, twenty-seven million, one hundred ninety-six thousand, four hundred nine".