1225011630 has 32 divisors (see below), whose sum is σ = 2949325344. Its totient is φ = 325636736.

The previous prime is 1225011607. The next prime is 1225011659. The reversal of 1225011630 is 361105221.

It is a junction number, because it is equal to n+sod(n) for n = 1225011597 and 1225011606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54897 + ... + 73916.

It is an arithmetic number, because the mean of its divisors is an integer number (92166417).

Almost surely, 2^1225011630 is an apocalyptic number.

1225011630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225011630 is an abundant number, since it is smaller than the sum of its proper divisors (1724313714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225011630 is a wasteful number, since it uses less digits than its factorization.

1225011630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129140.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1225011630 is about 35000.1661424628. The cubic root of 1225011630 is about 1069.9908666644.

Adding to 1225011630 its reverse (361105221), we get a palindrome (1586116851).

The spelling of 1225011630 in words is "one billion, two hundred twenty-five million, eleven thousand, six hundred thirty".