1225013355 has 32 divisors (see below), whose sum is σ = 2202292800. Its totient is φ = 645993216.

The previous prime is 1225013341. The next prime is 1225013359. The reversal of 1225013355 is 5533105221.

It is a happy number.

1225013355 is a `hidden beast` number, since 122 + 501 + 3 + 35 + 5 = 666.

It is not a de Polignac number, because 1225013355 - 2⁵ = 1225013323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1225013359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38964 + ... + 62993.

It is an arithmetic number, because the mean of its divisors is an integer number (68821650).

Almost surely, 2^1225013355 is an apocalyptic number.

1225013355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1225013355 is a deficient number, since it is larger than the sum of its proper divisors (977279445).

1225013355 is a wasteful number, since it uses less digits than its factorization.

1225013355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102060 (or 102054 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1225013355 is about 35000.1907851943. The cubic root of 1225013355 is about 1069.9913689000.

Adding to 1225013355 its reverse (5533105221), we get a palindrome (6758118576).

The spelling of 1225013355 in words is "one billion, two hundred twenty-five million, thirteen thousand, three hundred fifty-five".