1025782317 has 48 divisors (see below), whose sum is σ = 1818960000. Its totient is φ = 555278976.

The previous prime is 1025782297. The next prime is 1025782367. The reversal of 1025782317 is 7132875201.

1025782317 is a `hidden beast` number, since 10 + 257 + 82 + 317 = 666.

It is not a de Polignac number, because 1025782317 - 2⁸ = 1025782061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025782367) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49909 + ... + 67397.

It is an arithmetic number, because the mean of its divisors is an integer number (37895000).

Almost surely, 2^1025782317 is an apocalyptic number.

It is an amenable number.

1025782317 is a deficient number, since it is larger than the sum of its proper divisors (793177683).

1025782317 is a wasteful number, since it uses less digits than its factorization.

1025782317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17535 (or 17518 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1025782317 is about 32027.8365956866. The cubic root of 1025782317 is about 1008.5212870829.

The spelling of 1025782317 in words is "one billion, twenty-five million, seven hundred eighty-two thousand, three hundred seventeen".