55816425 has 48 divisors (see below), whose sum is σ = 117194880. Its totient is φ = 25513920.

The previous prime is 55816417. The next prime is 55816429. The reversal of 55816425 is 52461855.

55816425 is a `hidden beast` number, since 5 + 5 + 8 + 1 + 642 + 5 = 666.

It is not a de Polignac number, because 55816425 - 2³ = 55816417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55816425.

It is not an unprimeable number, because it can be changed into a prime (55816429) 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, 1182 + ... + 10631.

It is an arithmetic number, because the mean of its divisors is an integer number (2441560).

Almost surely, 2^55816425 is an apocalyptic number.

It is an amenable number.

55816425 is an abundant number, since it is smaller than the sum of its proper divisors (61378455).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55816425 is a wasteful number, since it uses less digits than its factorization.

55816425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11839 (or 11828 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 55816425 is about 7471.0390843577. The cubic root of 55816425 is about 382.1677237394.

The spelling of 55816425 in words is "fifty-five million, eight hundred sixteen thousand, four hundred twenty-five".