1425421069 has 2 divisors, whose sum is σ = 1425421070. Its totient is φ = 1425421068.

The previous prime is 1425421057. The next prime is 1425421091. The reversal of 1425421069 is 9601245241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1160219844 + 265201225 = 34062^2 + 16285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425421069 - 2²¹ = 1423323917 is a prime.

It is a super-2 number, since 2×1425421069² = 4063650447898205522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1425421009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712710534 + 712710535.

It is an arithmetic number, because the mean of its divisors is an integer number (712710535).

Almost surely, 2^1425421069 is an apocalyptic number.

It is an amenable number.

1425421069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425421069 is an equidigital number, since it uses as much as digits as its factorization.

1425421069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1425421069 is about 37754.7489595680. The cubic root of 1425421069 is about 1125.4193844464.

The spelling of 1425421069 in words is "one billion, four hundred twenty-five million, four hundred twenty-one thousand, sixty-nine".