1065440125 has 8 divisors (see below), whose sum is σ = 1329669432. Its totient is φ = 852352000.

The previous prime is 1065440107. The next prime is 1065440141. The reversal of 1065440125 is 5210445601.

It can be written as a sum of positive squares in 4 ways, for example, as 72812089 + 992628036 = 8533^2 + 31506^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1065440125 is a prime.

It is a super-2 number, since 2×1065440125² = 2270325319920031250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1065440093 and 1065440102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4261636 + ... + 4261885.

It is an arithmetic number, because the mean of its divisors is an integer number (166208679).

Almost surely, 2^1065440125 is an apocalyptic number.

It is an amenable number.

1065440125 is a deficient number, since it is larger than the sum of its proper divisors (264229307).

1065440125 is an frugal number, since it uses more digits than its factorization.

1065440125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8523536 (or 8523526 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1065440125 is about 32641.0803283225. The cubic root of 1065440125 is about 1021.3541302993.

Adding to 1065440125 its reverse (5210445601), we get a palindrome (6275885726).

The spelling of 1065440125 in words is "one billion, sixty-five million, four hundred forty thousand, one hundred twenty-five".