1225402113 has 16 divisors (see below), whose sum is σ = 1770767936. Its totient is φ = 749286720.

The previous prime is 1225402111. The next prime is 1225402127. The reversal of 1225402113 is 3112045221.

It is not a de Polignac number, because 1225402113 - 2¹ = 1225402111 is a prime.

It is a super-2 number, since 2×1225402113² = 3003220677089729538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225402113.

It is not an unprimeable number, because it can be changed into a prime (1225402111) 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, 93943 + ... + 106188.

It is an arithmetic number, because the mean of its divisors is an integer number (110672996).

Almost surely, 2^1225402113 is an apocalyptic number.

1225402113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1225402113 is a deficient number, since it is larger than the sum of its proper divisors (545365823).

1225402113 is a wasteful number, since it uses less digits than its factorization.

1225402113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200304.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1225402113 is about 35005.7440000923. The cubic root of 1225402113 is about 1070.1045441859.

Adding to 1225402113 its reverse (3112045221), we get a palindrome (4337447334).

The spelling of 1225402113 in words is "one billion, two hundred twenty-five million, four hundred two thousand, one hundred thirteen".