55530025 has 12 divisors (see below), whose sum is σ = 69284752. Its totient is φ = 44148240.

The previous prime is 55530019. The next prime is 55530029. The reversal of 55530025 is 52003555.

55530025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55530025 - 2³ = 55530017 is a prime.

It is a super-4 number, since 4×55530025⁴ (a number of 32 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55530029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2739 + ... + 10888.

Almost surely, 2^55530025 is an apocalyptic number.

It is an amenable number.

55530025 is a deficient number, since it is larger than the sum of its proper divisors (13754727).

55530025 is a wasteful number, since it uses less digits than its factorization.

55530025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13800 (or 13795 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 25.

The square root of 55530025 is about 7451.8470864612. The cubic root of 55530025 is about 381.5129548474.

The spelling of 55530025 in words is "fifty-five million, five hundred thirty thousand, twenty-five".