540644925 has 24 divisors (see below), whose sum is σ = 918029536. Its totient is φ = 280549440.

The previous prime is 540644921. The next prime is 540644939. The reversal of 540644925 is 529446045.

It is a happy number.

It is not a de Polignac number, because 540644925 - 2² = 540644921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540644921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94639 + ... + 100188.

Almost surely, 2^540644925 is an apocalyptic number.

It is an amenable number.

540644925 is a deficient number, since it is larger than the sum of its proper divisors (377384611).

540644925 is a wasteful number, since it uses less digits than its factorization.

540644925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194877 (or 194872 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 540644925 is about 23251.7725130795. The cubic root of 540644925 is about 814.6493404096.

The spelling of 540644925 in words is "five hundred forty million, six hundred forty-four thousand, nine hundred twenty-five".