1025275165 has 4 divisors (see below), whose sum is σ = 1230330204. Its totient is φ = 820220128.

The previous prime is 1025275157. The next prime is 1025275211. The reversal of 1025275165 is 5615725201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5615725201 = 337 ⋅16663873.

It can be written as a sum of positive squares in 2 ways, for example, as 173686041 + 851589124 = 13179^2 + 29182^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025275165 - 2³ = 1025275157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1025275165.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 102527512 + ... + 102527521.

It is an arithmetic number, because the mean of its divisors is an integer number (307582551).

Almost surely, 2^1025275165 is an apocalyptic number.

It is an amenable number.

1025275165 is a deficient number, since it is larger than the sum of its proper divisors (205055039).

1025275165 is an equidigital number, since it uses as much as digits as its factorization.

1025275165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205055038.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 1025275165 is about 32019.9182541118. The cubic root of 1025275165 is about 1008.3550536647.

The spelling of 1025275165 in words is "one billion, twenty-five million, two hundred seventy-five thousand, one hundred sixty-five".