1011525745 has 4 divisors (see below), whose sum is σ = 1213830900. Its totient is φ = 809220592.

The previous prime is 1011525737. The next prime is 1011525787. The reversal of 1011525745 is 5475251101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 369562176 + 641963569 = 19224^2 + 25337^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011525745 - 2³ = 1011525737 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101152570 + ... + 101152579.

It is an arithmetic number, because the mean of its divisors is an integer number (303457725).

Almost surely, 2^1011525745 is an apocalyptic number.

It is an amenable number.

1011525745 is a deficient number, since it is larger than the sum of its proper divisors (202305155).

1011525745 is an equidigital number, since it uses as much as digits as its factorization.

1011525745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202305154.

The product of its (nonzero) digits is 7000, while the sum is 31.

The square root of 1011525745 is about 31804.4925285721. The cubic root of 1011525745 is about 1003.8272484821.

Adding to 1011525745 its reverse (5475251101), we get a palindrome (6486776846).

The spelling of 1011525745 in words is "one billion, eleven million, five hundred twenty-five thousand, seven hundred forty-five".