1225621034 has 16 divisors (see below), whose sum is σ = 2006186400. Its totient is φ = 556926960.

The previous prime is 1225621031. The next prime is 1225621039. The reversal of 1225621034 is 4301265221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1225620994 and 1225621012.

It is not an unprimeable number, because it can be changed into a prime (1225621031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87017 + ... + 100115.

It is an arithmetic number, because the mean of its divisors is an integer number (125386650).

Almost surely, 2^1225621034 is an apocalyptic number.

1225621034 is a deficient number, since it is larger than the sum of its proper divisors (780565366).

1225621034 is a wasteful number, since it uses less digits than its factorization.

1225621034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17365.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1225621034 is about 35008.8707901297. The cubic root of 1225621034 is about 1070.1682659647.

Adding to 1225621034 its reverse (4301265221), we get a palindrome (5526886255).

The spelling of 1225621034 in words is "one billion, two hundred twenty-five million, six hundred twenty-one thousand, thirty-four".