2154250205 has 16 divisors (see below), whose sum is σ = 2614777200. Its totient is φ = 1703657472.

The previous prime is 2154250201. The next prime is 2154250207. The reversal of 2154250205 is 5020524512.

It can be written as a sum of positive squares in 8 ways, for example, as 242549476 + 1911700729 = 15574^2 + 43723^2 .

It is a cyclic number.

It is not a de Polignac number, because 2154250205 - 2² = 2154250201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154250201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530021 + ... + 534069.

It is an arithmetic number, because the mean of its divisors is an integer number (163423575).

Almost surely, 2^2154250205 is an apocalyptic number.

It is an amenable number.

2154250205 is a deficient number, since it is larger than the sum of its proper divisors (460526995).

2154250205 is a wasteful number, since it uses less digits than its factorization.

2154250205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5248.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 2154250205 is about 46413.9009888201. The cubic root of 2154250205 is about 1291.5127986722.

Adding to 2154250205 its reverse (5020524512), we get a palindrome (7174774717).

The spelling of 2154250205 in words is "two billion, one hundred fifty-four million, two hundred fifty thousand, two hundred five".