1025660159 has 2 divisors, whose sum is σ = 1025660160. Its totient is φ = 1025660158.

The previous prime is 1025660149. The next prime is 1025660173. The reversal of 1025660159 is 9510665201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1025660159 - 2²⁰ = 1024611583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025660149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512830079 + 512830080.

It is an arithmetic number, because the mean of its divisors is an integer number (512830080).

Almost surely, 2^1025660159 is an apocalyptic number.

1025660159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025660159 is an equidigital number, since it uses as much as digits as its factorization.

1025660159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 1025660159 is about 32025.9294790955. The cubic root of 1025660159 is about 1008.4812513521.

The spelling of 1025660159 in words is "one billion, twenty-five million, six hundred sixty thousand, one hundred fifty-nine".