1028025697 has 2 divisors, whose sum is σ = 1028025698. Its totient is φ = 1028025696.

The previous prime is 1028025659. The next prime is 1028025701. The reversal of 1028025697 is 7965208201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 905347921 + 122677776 = 30089^2 + 11076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028025697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1028025637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514012848 + 514012849.

It is an arithmetic number, because the mean of its divisors is an integer number (514012849).

Almost surely, 2^1028025697 is an apocalyptic number.

It is an amenable number.

1028025697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028025697 is an equidigital number, since it uses as much as digits as its factorization.

1028025697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 1028025697 is about 32062.8398149634. The cubic root of 1028025697 is about 1009.2559618422.

The spelling of 1028025697 in words is "one billion, twenty-eight million, twenty-five thousand, six hundred ninety-seven".