1010020225 has 6 divisors (see below), whose sum is σ = 1252425110. Its totient is φ = 808016160.

The previous prime is 1010020223. The next prime is 1010020241. The reversal of 1010020225 is 5220200101.

It can be written as a sum of positive squares in 3 ways, for example, as 296115264 + 713904961 = 17208^2 + 26719^2 .

It is not a de Polignac number, because 1010020225 - 2¹ = 1010020223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1010020223) 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, 20200380 + ... + 20200429.

Almost surely, 2^1010020225 is an apocalyptic number.

It is an amenable number.

1010020225 is a deficient number, since it is larger than the sum of its proper divisors (242404885).

1010020225 is an equidigital number, since it uses as much as digits as its factorization.

1010020225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40400819 (or 40400814 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1010020225 is about 31780.8153608431. The cubic root of 1010020225 is about 1003.3289805908.

Adding to 1010020225 its reverse (5220200101), we get a palindrome (6230220326).

The spelling of 1010020225 in words is "one billion, ten million, twenty thousand, two hundred twenty-five".