2125454365 has 4 divisors (see below), whose sum is σ = 2550545244. Its totient is φ = 1700363488.

The previous prime is 2125454327. The next prime is 2125454417. The reversal of 2125454365 is 5634545212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 612166564 + 1513287801 = 24742^2 + 38901^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125454365 - 2⁹ = 2125453853 is a prime.

It is an alternating number because its digits alternate between even and odd.

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 3 ways as a sum of consecutive naturals, for example, 212545432 + ... + 212545441.

It is an arithmetic number, because the mean of its divisors is an integer number (637636311).

Almost surely, 2^2125454365 is an apocalyptic number.

It is an amenable number.

2125454365 is a deficient number, since it is larger than the sum of its proper divisors (425090879).

2125454365 is an equidigital number, since it uses as much as digits as its factorization.

2125454365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425090878.

The product of its digits is 144000, while the sum is 37.

The square root of 2125454365 is about 46102.6503034262. The cubic root of 2125454365 is about 1285.7324201998.

Adding to 2125454365 its reverse (5634545212), we get a palindrome (7759999577).

It can be divided in two parts, 2125 and 454365, that added together give a triangular number (456490 = T₉₅₅).

The spelling of 2125454365 in words is "two billion, one hundred twenty-five million, four hundred fifty-four thousand, three hundred sixty-five".