2545205 has 8 divisors (see below), whose sum is σ = 3289272. Its totient is φ = 1879488.

The previous prime is 2545187. The next prime is 2545211. The reversal of 2545205 is 5025452.

It can be written as a sum of positive squares in 4 ways, for example, as 253009 + 2292196 = 503^2 + 1514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2545205 - 2⁶ = 2545141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19514 + ... + 19643.

It is an arithmetic number, because the mean of its divisors is an integer number (411159).

2^2545205 is an apocalyptic number.

It is an amenable number.

2545205 is a deficient number, since it is larger than the sum of its proper divisors (744067).

2545205 is a wasteful number, since it uses less digits than its factorization.

2545205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39175.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 2545205 is about 1595.3698630725. The cubic root of 2545205 is about 136.5340341903.

The spelling of 2545205 in words is "two million, five hundred forty-five thousand, two hundred five".