1252020269 has 2 divisors, whose sum is σ = 1252020270. Its totient is φ = 1252020268.

The previous prime is 1252020251. The next prime is 1252020307. The reversal of 1252020269 is 9620202521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 951414025 + 300606244 = 30845^2 + 17338^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252020269 - 2⁸ = 1252020013 is a prime.

It is a super-2 number, since 2×1252020269² = 3135109507973664722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252028269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626010134 + 626010135.

It is an arithmetic number, because the mean of its divisors is an integer number (626010135).

Almost surely, 2^1252020269 is an apocalyptic number.

It is an amenable number.

1252020269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252020269 is an equidigital number, since it uses as much as digits as its factorization.

1252020269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1252020269 is about 35383.8984426533. The cubic root of 1252020269 is about 1077.7973709947.

The spelling of 1252020269 in words is "one billion, two hundred fifty-two million, twenty thousand, two hundred sixty-nine".