1020525569 has 8 divisors (see below), whose sum is σ = 1166561088. Its totient is φ = 874551600.

The previous prime is 1020525563. The next prime is 1020525593. The reversal of 1020525569 is 9655250201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020525569 - 2²⁰ = 1019476993 is a prime.

It is a super-2 number, since 2×1020525569² = 2082944873965547522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1020525563) 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, 28499 + ... + 53415.

It is an arithmetic number, because the mean of its divisors is an integer number (145820136).

Almost surely, 2^1020525569 is an apocalyptic number.

It is an amenable number.

1020525569 is a deficient number, since it is larger than the sum of its proper divisors (146035519).

1020525569 is an equidigital number, since it uses as much as digits as its factorization.

1020525569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30775.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1020525569 is about 31945.6658875660. The cubic root of 1020525569 is about 1006.7955719294.

The spelling of 1020525569 in words is "one billion, twenty million, five hundred twenty-five thousand, five hundred sixty-nine".