1042725065 has 16 divisors (see below), whose sum is σ = 1280096400. Its totient is φ = 815173632.

The previous prime is 1042725059. The next prime is 1042725091. The reversal of 1042725065 is 5605272401.

It can be written as a sum of positive squares in 8 ways, for example, as 16384 + 1042708681 = 128^2 + 32291^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042725065 - 2⁶ = 1042725001 is a prime.

It is a super-2 number, since 2×1042725065² = 2174551122358508450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26681 + ... + 52889.

It is an arithmetic number, because the mean of its divisors is an integer number (80006025).

Almost surely, 2^1042725065 is an apocalyptic number.

It is an amenable number.

1042725065 is a deficient number, since it is larger than the sum of its proper divisors (237371335).

1042725065 is a wasteful number, since it uses less digits than its factorization.

1042725065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26396.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 1042725065 is about 32291.2536919829. The cubic root of 1042725065 is about 1014.0435439780.

Adding to 1042725065 its reverse (5605272401), we get a palindrome (6647997466).

The spelling of 1042725065 in words is "one billion, forty-two million, seven hundred twenty-five thousand, sixty-five".