1625016655 has 24 divisors (see below), whose sum is σ = 2119729392. Its totient is φ = 1195041792.

The previous prime is 1625016647. The next prime is 1625016661. The reversal of 1625016655 is 5566105261.

It is not a de Polignac number, because 1625016655 - 2³ = 1625016647 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49059 + ... + 75211.

It is an arithmetic number, because the mean of its divisors is an integer number (88322058).

Almost surely, 2^1625016655 is an apocalyptic number.

1625016655 is a deficient number, since it is larger than the sum of its proper divisors (494712737).

1625016655 is a wasteful number, since it uses less digits than its factorization.

1625016655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26235 (or 26218 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 1625016655 is about 40311.4953208139. The cubic root of 1625016655 is about 1175.6713604086.

The spelling of 1625016655 in words is "one billion, six hundred twenty-five million, sixteen thousand, six hundred fifty-five".