1069025921 has 4 divisors (see below), whose sum is σ = 1069238532. Its totient is φ = 1068813312.

The previous prime is 1069025891. The next prime is 1069025957. The reversal of 1069025921 is 1295209601.

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 497290000 + 571735921 = 22300^2 + 23911^2 .

It is a cyclic number.

It is not a de Polignac number, because 1069025921 - 2¹⁴ = 1069009537 is a prime.

It is a super-2 number, since 2×1069025921² = 2285632839539796482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1069025821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98576 + ... + 108881.

It is an arithmetic number, because the mean of its divisors is an integer number (267309633).

Almost surely, 2^1069025921 is an apocalyptic number.

It is an amenable number.

1069025921 is a deficient number, since it is larger than the sum of its proper divisors (212611).

1069025921 is an equidigital number, since it uses as much as digits as its factorization.

1069025921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212610.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1069025921 is about 32695.9618454634. The cubic root of 1069025921 is about 1022.4986546771.

The spelling of 1069025921 in words is "one billion, sixty-nine million, twenty-five thousand, nine hundred twenty-one".