542111525 has 6 divisors (see below), whose sum is σ = 672218322. Its totient is φ = 433689200.

The previous prime is 542111513. The next prime is 542111543. The reversal of 542111525 is 525111245.

It can be written as a sum of positive squares in 3 ways, for example, as 122722084 + 419389441 = 11078^2 + 20479^2 .

It is not a de Polignac number, because 542111525 - 2²² = 537917221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542111494 and 542111503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10842206 + ... + 10842255.

It is an arithmetic number, because the mean of its divisors is an integer number (112036387).

Almost surely, 2^542111525 is an apocalyptic number.

It is an amenable number.

542111525 is a deficient number, since it is larger than the sum of its proper divisors (130106797).

542111525 is a wasteful number, since it uses less digits than its factorization.

542111525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21684471 (or 21684466 counting only the distinct ones).

The product of its digits is 2000, while the sum is 26.

The square root of 542111525 is about 23283.2885349128. The cubic root of 542111525 is about 815.3853046577.

The spelling of 542111525 in words is "five hundred forty-two million, one hundred eleven thousand, five hundred twenty-five".