1025215317 has 48 divisors (see below), whose sum is σ = 1771960320. Its totient is φ = 558477216.

The previous prime is 1025215259. The next prime is 1025215333. The reversal of 1025215317 is 7135125201.

1025215317 is a `hidden beast` number, since 102 + 5 + 21 + 531 + 7 = 666.

It is not a de Polignac number, because 1025215317 - 2¹¹ = 1025213269 is a prime.

It is a super-2 number, since 2×1025215317² = 2102132892422820978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025215397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 501784 + ... + 503822.

It is an arithmetic number, because the mean of its divisors is an integer number (36915840).

Almost surely, 2^1025215317 is an apocalyptic number.

It is an amenable number.

1025215317 is a deficient number, since it is larger than the sum of its proper divisors (746745003).

1025215317 is a wasteful number, since it uses less digits than its factorization.

1025215317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 1025215317 is about 32018.9836971756. The cubic root of 1025215317 is about 1008.3354331734.

The spelling of 1025215317 in words is "one billion, twenty-five million, two hundred fifteen thousand, three hundred seventeen".