1025025791 has 2 divisors, whose sum is σ = 1025025792. Its totient is φ = 1025025790.

The previous prime is 1025025769. The next prime is 1025025811. The reversal of 1025025791 is 1975205201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025025791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025025721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512512895 + 512512896.

It is an arithmetic number, because the mean of its divisors is an integer number (512512896).

Almost surely, 2^1025025791 is an apocalyptic number.

1025025791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025025791 is an equidigital number, since it uses as much as digits as its factorization.

1025025791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 1025025791 is about 32016.0239723798. The cubic root of 1025025791 is about 1008.2732941750.

The spelling of 1025025791 in words is "one billion, twenty-five million, twenty-five thousand, seven hundred ninety-one".