55001225 has 6 divisors (see below), whose sum is σ = 68201550. Its totient is φ = 44000960.

The previous prime is 55001207. The next prime is 55001237. The reversal of 55001225 is 52210055.

It can be written as a sum of positive squares in 3 ways, for example, as 12020089 + 42981136 = 3467^2 + 6556^2 .

It is not a de Polignac number, because 55001225 - 2⁸ = 55000969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55001197 and 55001206.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1100000 + ... + 1100049.

It is an arithmetic number, because the mean of its divisors is an integer number (11366925).

Almost surely, 2^55001225 is an apocalyptic number.

It is an amenable number.

55001225 is a deficient number, since it is larger than the sum of its proper divisors (13200325).

55001225 is a wasteful number, since it uses less digits than its factorization.

55001225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200059 (or 2200054 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 55001225 is about 7416.2810761189. The cubic root of 55001225 is about 380.2980694593.

The spelling of 55001225 in words is "fifty-five million, one thousand, two hundred twenty-five".