1555135005025 has 24 divisors (see below), whose sum is σ = 2210199698880. Its totient is φ = 1063305111360.

The previous prime is 1555135005023. The next prime is 1555135005043. The reversal of 1555135005025 is 5205005315551.

It is not a de Polignac number, because 1555135005025 - 2¹ = 1555135005023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1555135005023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12744010 + ... + 12865459.

It is an arithmetic number, because the mean of its divisors is an integer number (92091654120).

Almost surely, 2^{1555135005025} is an apocalyptic number.

It is an amenable number.

1555135005025 is a deficient number, since it is larger than the sum of its proper divisors (655064693855).

1555135005025 is a wasteful number, since it uses less digits than its factorization.

1555135005025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25609833 (or 25609828 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 1555135005025 in words is "one trillion, five hundred fifty-five billion, one hundred thirty-five million, five thousand, twenty-five".