1402825909 has 2 divisors, whose sum is σ = 1402825910. Its totient is φ = 1402825908.

The previous prime is 1402825891. The next prime is 1402825939. The reversal of 1402825909 is 9095282041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024640100 + 378185809 = 32010^2 + 19447^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402825909 - 2¹¹ = 1402823861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1402825939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701412954 + 701412955.

It is an arithmetic number, because the mean of its divisors is an integer number (701412955).

Almost surely, 2^1402825909 is an apocalyptic number.

It is an amenable number.

1402825909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402825909 is an equidigital number, since it uses as much as digits as its factorization.

1402825909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1402825909 is about 37454.3176282789. The cubic root of 1402825909 is about 1119.4411298166.

The spelling of 1402825909 in words is "one billion, four hundred two million, eight hundred twenty-five thousand, nine hundred nine".