925815997 has 8 divisors (see below), whose sum is σ = 933363000. Its totient is φ = 918280704.

The previous prime is 925815991. The next prime is 925816009. The reversal of 925815997 is 799518529.

It can be written as a sum of positive squares in 4 ways, for example, as 91126116 + 834689881 = 9546^2 + 28891^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 925815997 - 2¹¹ = 925813949 is a prime.

It is a super-2 number, since 2×925815997² = 1714270520602208018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (925815991) 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 in 7 ways as a sum of consecutive naturals, for example, 226629 + ... + 230677.

It is an arithmetic number, because the mean of its divisors is an integer number (116670375).

Almost surely, 2^925815997 is an apocalyptic number.

It is an amenable number.

925815997 is a deficient number, since it is larger than the sum of its proper divisors (7547003).

925815997 is a wasteful number, since it uses less digits than its factorization.

925815997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855.

The product of its digits is 2041200, while the sum is 55.

The square root of 925815997 is about 30427.2246023195. The cubic root of 925815997 is about 974.6340057822.

The spelling of 925815997 in words is "nine hundred twenty-five million, eight hundred fifteen thousand, nine hundred ninety-seven".