1045225521 has 6 divisors (see below), whose sum is σ = 1509770210. Its totient is φ = 696817008.

The previous prime is 1045225507. The next prime is 1045225567. The reversal of 1045225521 is 1255225401.

1045225521 is a `hidden beast` number, since 104 + 5 + 2 + 2 + 552 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 678081600 + 367143921 = 26040^2 + 19161^2 .

It is not a de Polignac number, because 1045225521 - 2⁶ = 1045225457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1045225121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58068076 + ... + 58068093.

Almost surely, 2^1045225521 is an apocalyptic number.

It is an amenable number.

1045225521 is a deficient number, since it is larger than the sum of its proper divisors (464544689).

1045225521 is a wasteful number, since it uses less digits than its factorization.

1045225521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116136175 (or 116136172 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1045225521 is about 32329.9477419930. The cubic root of 1045225521 is about 1014.8534561581.

The spelling of 1045225521 in words is "one billion, forty-five million, two hundred twenty-five thousand, five hundred twenty-one".