1430725081 has 2 divisors, whose sum is σ = 1430725082. Its totient is φ = 1430725080.

The previous prime is 1430725067. The next prime is 1430725129. The reversal of 1430725081 is 1805270341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1347550681 + 83174400 = 36709^2 + 9120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1430725081 - 2⁹ = 1430724569 is a prime.

It is a super-2 number, since 2×1430725081² = 4093948514804913122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1430725481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715362540 + 715362541.

It is an arithmetic number, because the mean of its divisors is an integer number (715362541).

Almost surely, 2^1430725081 is an apocalyptic number.

It is an amenable number.

1430725081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1430725081 is an equidigital number, since it uses as much as digits as its factorization.

1430725081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1430725081 is about 37824.9267150645. The cubic root of 1430725081 is about 1126.8135571216.

The spelling of 1430725081 in words is "one billion, four hundred thirty million, seven hundred twenty-five thousand, eighty-one".