542445525 has 24 divisors (see below), whose sum is σ = 996493760. Its totient is φ = 289303920.

The previous prime is 542445523. The next prime is 542445557. The reversal of 542445525 is 525544245.

542445525 is a `hidden beast` number, since 542 + 44 + 55 + 25 = 666.

It is not a de Polignac number, because 542445525 - 2¹ = 542445523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 542445525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542445523) 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, 401137 + ... + 402486.

Almost surely, 2^542445525 is an apocalyptic number.

It is an amenable number.

542445525 is a deficient number, since it is larger than the sum of its proper divisors (454048235).

542445525 is a wasteful number, since it uses less digits than its factorization.

542445525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803642 (or 803631 counting only the distinct ones).

The product of its digits is 160000, while the sum is 36.

The square root of 542445525 is about 23290.4599568149. The cubic root of 542445525 is about 815.5527257929.

The spelling of 542445525 in words is "five hundred forty-two million, four hundred forty-five thousand, five hundred twenty-five".