55440325 has 12 divisors (see below), whose sum is σ = 69521220. Its totient is φ = 43852160.

The previous prime is 55440317. The next prime is 55440337. The reversal of 55440325 is 52304455.

It can be written as a sum of positive squares in 6 ways, for example, as 2427364 + 53012961 = 1558^2 + 7281^2 .

It is not a de Polignac number, because 55440325 - 2³ = 55440317 is a prime.

It is a super-2 number, since 2×55440325² = 6147259272211250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55440293 and 55440302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10234 + ... + 14683.

It is an arithmetic number, because the mean of its divisors is an integer number (5793435).

Almost surely, 2^55440325 is an apocalyptic number.

It is an amenable number.

55440325 is a deficient number, since it is larger than the sum of its proper divisors (14080895).

55440325 is a wasteful number, since it uses less digits than its factorization.

55440325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25016 (or 25011 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 55440325 is about 7445.8260119345. The cubic root of 55440325 is about 381.3074194624.

The spelling of 55440325 in words is "fifty-five million, four hundred forty thousand, three hundred twenty-five".