2566125542 has 4 divisors (see below), whose sum is σ = 3849188316. Its totient is φ = 1283062770.

The previous prime is 2566125521. The next prime is 2566125587. The reversal of 2566125542 is 2455216652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2566125496 and 2566125505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641531384 + ... + 641531387.

It is an arithmetic number, because the mean of its divisors is an integer number (962297079).

Almost surely, 2^2566125542 is an apocalyptic number.

2566125542 is a deficient number, since it is larger than the sum of its proper divisors (1283062774).

2566125542 is a wasteful number, since it uses less digits than its factorization.

2566125542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283062773.

The product of its digits is 144000, while the sum is 38.

The square root of 2566125542 is about 50656.9397220164. The cubic root of 2566125542 is about 1369.0709850621.

The spelling of 2566125542 in words is "two billion, five hundred sixty-six million, one hundred twenty-five thousand, five hundred forty-two".