1204025155 has 32 divisors (see below), whose sum is σ = 1563978240. Its totient is φ = 886878720.

The previous prime is 1204025149. The next prime is 1204025239. The reversal of 1204025155 is 5515204021.

It is a de Polignac number, because none of the positive numbers 2^k-1204025155 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 983874 + ... + 985096.

It is an arithmetic number, because the mean of its divisors is an integer number (48874320).

Almost surely, 2^1204025155 is an apocalyptic number.

1204025155 is a deficient number, since it is larger than the sum of its proper divisors (359953085).

1204025155 is a wasteful number, since it uses less digits than its factorization.

1204025155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1204025155 is about 34699.0656214256. The cubic root of 1204025155 is about 1063.8454002462.

Adding to 1204025155 its reverse (5515204021), we get a palindrome (6719229176).

The spelling of 1204025155 in words is "one billion, two hundred four million, twenty-five thousand, one hundred fifty-five".