1012251269 has 2 divisors, whose sum is σ = 1012251270. Its totient is φ = 1012251268.

The previous prime is 1012251223. The next prime is 1012251271. The reversal of 1012251269 is 9621522101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1007300644 + 4950625 = 31738^2 + 2225^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012251269 - 2²⁰ = 1011202693 is a prime.

It is a super-2 number, since 2×1012251269² = 2049305263184220722, which contains 22 as substring.

Together with 1012251271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012251169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506125634 + 506125635.

It is an arithmetic number, because the mean of its divisors is an integer number (506125635).

Almost surely, 2^1012251269 is an apocalyptic number.

It is an amenable number.

1012251269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012251269 is an equidigital number, since it uses as much as digits as its factorization.

1012251269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1012251269 is about 31815.8964827333. The cubic root of 1012251269 is about 1004.0671918572.

The spelling of 1012251269 in words is "one billion, twelve million, two hundred fifty-one thousand, two hundred sixty-nine".