252778000469 has 2 divisors, whose sum is σ = 252778000470. Its totient is φ = 252778000468.

The previous prime is 252778000439. The next prime is 252778000523. The reversal of 252778000469 is 964000877252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250038001444 + 2739999025 = 500038^2 + 52345^2 .

It is a cyclic number.

It is not a de Polignac number, because 252778000469 - 2²⁸ = 252509565013 is a prime.

It is a super-2 number, since 2×252778000469² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252778000439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126389000234 + 126389000235.

It is an arithmetic number, because the mean of its divisors is an integer number (126389000235).

Almost surely, 2^252778000469 is an apocalyptic number.

It is an amenable number.

252778000469 is a deficient number, since it is larger than the sum of its proper divisors (1).

252778000469 is an equidigital number, since it uses as much as digits as its factorization.

252778000469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 252778000469 in words is "two hundred fifty-two billion, seven hundred seventy-eight million, four hundred sixty-nine", and thus it is an aban number.