1555125155 has 8 divisors (see below), whose sum is σ = 1896743184. Its totient is φ = 1223704800.

The previous prime is 1555125119. The next prime is 1555125161. The reversal of 1555125155 is 5515215551.

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

It is not a de Polignac number, because 1555125155 - 2⁸ = 1555124899 is a prime.

It is a Duffinian number.

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, 2549081 + ... + 2549690.

It is an arithmetic number, because the mean of its divisors is an integer number (237092898).

Almost surely, 2^1555125155 is an apocalyptic number.

1555125155 is a deficient number, since it is larger than the sum of its proper divisors (341618029).

1555125155 is an equidigital number, since it uses as much as digits as its factorization.

1555125155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5098837.

The product of its digits is 31250, while the sum is 35.

The square root of 1555125155 is about 39435.0751869449. The cubic root of 1555125155 is about 1158.5686753096.

The spelling of 1555125155 in words is "one billion, five hundred fifty-five million, one hundred twenty-five thousand, one hundred fifty-five".