1225440601 has 16 divisors (see below), whose sum is σ = 1534515840. Its totient is φ = 950705280.

The previous prime is 1225440581. The next prime is 1225440647. The reversal of 1225440601 is 1060445221.

It is a happy number.

It is not a de Polignac number, because 1225440601 - 2²¹ = 1223343449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1225440691) 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, 17116 + ... + 52381.

It is an arithmetic number, because the mean of its divisors is an integer number (95907240).

Almost surely, 2^1225440601 is an apocalyptic number.

1225440601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1225440601 is a deficient number, since it is larger than the sum of its proper divisors (309075239).

1225440601 is a wasteful number, since it uses less digits than its factorization.

1225440601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69744.

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

The square root of 1225440601 is about 35006.2937341273. The cubic root of 1225440601 is about 1070.1157475158.

Adding to 1225440601 its reverse (1060445221), we get a palindrome (2285885822).

The spelling of 1225440601 in words is "one billion, two hundred twenty-five million, four hundred forty thousand, six hundred one".