545925025649 has 4 divisors (see below), whose sum is σ = 545932159140. Its totient is φ = 545917892160.

The previous prime is 545925025579. The next prime is 545925025697. The reversal of 545925025649 is 946520529545.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 946520529545 = 5 ⋅189304105909.

It can be written as a sum of positive squares in 2 ways, for example, as 227535678049 + 318389347600 = 477007^2 + 564260^2 .

It is a cyclic number.

It is not a de Polignac number, because 545925025649 - 2³² = 541630058353 is a prime.

It is a super-2 number, since 2×545925025649² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545925025594 and 545925025603.

It is not an unprimeable number, because it can be changed into a prime (545925045649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3450692 + ... + 3605429.

It is an arithmetic number, because the mean of its divisors is an integer number (136483039785).

Almost surely, 2^545925025649 is an apocalyptic number.

It is an amenable number.

545925025649 is a deficient number, since it is larger than the sum of its proper divisors (7133491).

545925025649 is an equidigital number, since it uses as much as digits as its factorization.

545925025649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7133490.

The product of its (nonzero) digits is 19440000, while the sum is 56.

The spelling of 545925025649 in words is "five hundred forty-five billion, nine hundred twenty-five million, twenty-five thousand, six hundred forty-nine".