1025500165 has 8 divisors (see below), whose sum is σ = 1232766360. Its totient is φ = 818956032.

The previous prime is 1025500141. The next prime is 1025500169. The reversal of 1025500165 is 5610055201.

It can be written as a sum of positive squares in 4 ways, for example, as 24980004 + 1000520161 = 4998^2 + 31631^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025500165 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025500169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177384 + ... + 183073.

It is an arithmetic number, because the mean of its divisors is an integer number (154095795).

Almost surely, 2^1025500165 is an apocalyptic number.

It is an amenable number.

1025500165 is a deficient number, since it is larger than the sum of its proper divisors (207266195).

1025500165 is an equidigital number, since it uses as much as digits as its factorization.

1025500165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361031.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 1025500165 is about 32023.4314994505. The cubic root of 1025500165 is about 1008.4288105449.

Adding to 1025500165 its reverse (5610055201), we get a palindrome (6635555366).

The spelling of 1025500165 in words is "one billion, twenty-five million, five hundred thousand, one hundred sixty-five".