542100025 has 6 divisors (see below), whose sum is σ = 672204062. Its totient is φ = 433680000.

The previous prime is 542100023. The next prime is 542100043. The reversal of 542100025 is 520001245.

It can be written as a sum of positive squares in 3 ways, for example, as 1936 + 542098089 = 44^2 + 23283^2 .

It is not a de Polignac number, because 542100025 - 2¹ = 542100023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542099975 and 542100011.

It is not an unprimeable number, because it can be changed into a prime (542100023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10841976 + ... + 10842025.

Almost surely, 2^542100025 is an apocalyptic number.

It is an amenable number.

542100025 is a deficient number, since it is larger than the sum of its proper divisors (130104037).

542100025 is a wasteful number, since it uses less digits than its factorization.

542100025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21684011 (or 21684006 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 542100025 is about 23283.0415753612. The cubic root of 542100025 is about 815.3795389331.

The spelling of 542100025 in words is "five hundred forty-two million, one hundred thousand, twenty-five".