1225022641 has 4 divisors (see below), whose sum is σ = 1254901284. Its totient is φ = 1195144000.

The previous prime is 1225022609. The next prime is 1225022651. The reversal of 1225022641 is 1462205221.

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 131331600 + 1093691041 = 11460^2 + 33071^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225022641 - 2⁵ = 1225022609 is a prime.

It is a super-2 number, since 2×1225022641² = 3001360941925229762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225022651) 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, 14939260 + ... + 14939341.

It is an arithmetic number, because the mean of its divisors is an integer number (313725321).

Almost surely, 2^1225022641 is an apocalyptic number.

It is an amenable number.

1225022641 is a deficient number, since it is larger than the sum of its proper divisors (29878643).

1225022641 is an equidigital number, since it uses as much as digits as its factorization.

1225022641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29878642.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1225022641 is about 35000.3234413627. The cubic root of 1225022641 is about 1069.9940725208.

Adding to 1225022641 its reverse (1462205221), we get a palindrome (2687227862).

The spelling of 1225022641 in words is "one billion, two hundred twenty-five million, twenty-two thousand, six hundred forty-one".