55108985925 has 48 divisors (see below), whose sum is σ = 104347607040. Its totient is φ = 25139970240.

The previous prime is 55108985923. The next prime is 55108985927. The reversal of 55108985925 is 52958980155.

It is an interprime number because it is at equal distance from previous prime (55108985923) and next prime (55108985927).

It is not a de Polignac number, because 55108985925 - 2¹ = 55108985923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55108985923) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 141904 + ... + 361046.

It is an arithmetic number, because the mean of its divisors is an integer number (2173908480).

Almost surely, 2^55108985925 is an apocalyptic number.

It is an amenable number.

55108985925 is a deficient number, since it is larger than the sum of its proper divisors (49238621115).

55108985925 is a wasteful number, since it uses less digits than its factorization.

55108985925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219642 (or 219637 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 57.

The spelling of 55108985925 in words is "fifty-five billion, one hundred eight million, nine hundred eighty-five thousand, nine hundred twenty-five".