1222425501 has 16 divisors (see below), whose sum is σ = 1780446528. Its totient is φ = 739875200.

The previous prime is 1222425497. The next prime is 1222425521. The reversal of 1222425501 is 1055242221.

It is a cyclic number.

It is not a de Polignac number, because 1222425501 - 2² = 1222425497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222425521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775 + ... + 49451.

It is an arithmetic number, because the mean of its divisors is an integer number (111277908).

Almost surely, 2^1222425501 is an apocalyptic number.

1222425501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222425501 is a deficient number, since it is larger than the sum of its proper divisors (558021027).

1222425501 is a wasteful number, since it uses less digits than its factorization.

1222425501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49452.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1222425501 is about 34963.2020987781. The cubic root of 1222425501 is about 1069.2373815908.

Adding to 1222425501 its reverse (1055242221), we get a palindrome (2277667722).

The spelling of 1222425501 in words is "one billion, two hundred twenty-two million, four hundred twenty-five thousand, five hundred one".