1225673945 has 8 divisors (see below), whose sum is σ = 1548219840. Its totient is φ = 928931760.

The previous prime is 1225673929. The next prime is 1225673959. The reversal of 1225673945 is 5493765221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1225673945 - 2⁴ = 1225673929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225673896 and 1225673905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6450821 + ... + 6451010.

It is an arithmetic number, because the mean of its divisors is an integer number (193527480).

Almost surely, 2^1225673945 is an apocalyptic number.

It is an amenable number.

1225673945 is a deficient number, since it is larger than the sum of its proper divisors (322545895).

1225673945 is a wasteful number, since it uses less digits than its factorization.

1225673945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12901855.

The product of its digits is 453600, while the sum is 44.

The square root of 1225673945 is about 35009.6264618747. The cubic root of 1225673945 is about 1070.1836657381.

The spelling of 1225673945 in words is "one billion, two hundred twenty-five million, six hundred seventy-three thousand, nine hundred forty-five".