1225125154 has 16 divisors (see below), whose sum is σ = 2006259840. Its totient is φ = 556455760.

The previous prime is 1225125113. The next prime is 1225125163. The reversal of 1225125154 is 4515215221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9927 + ... + 50485.

It is an arithmetic number, because the mean of its divisors is an integer number (125391240).

Almost surely, 2^1225125154 is an apocalyptic number.

1225125154 is a deficient number, since it is larger than the sum of its proper divisors (781134686).

1225125154 is a wasteful number, since it uses less digits than its factorization.

1225125154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41945.

The product of its digits is 4000, while the sum is 28.

The square root of 1225125154 is about 35001.7878686218. The cubic root of 1225125154 is about 1070.0239182938.

The spelling of 1225125154 in words is "one billion, two hundred twenty-five million, one hundred twenty-five thousand, one hundred fifty-four".