25475150666473 has 4 divisors (see below), whose sum is σ = 25475992321860. Its totient is φ = 25474309011088.

The previous prime is 25475150666401. The next prime is 25475150666561. The reversal of 25475150666473 is 37466605157452.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22356225128169 + 3118925538304 = 4728237^2 + 1766048^2 .

It is a cyclic number.

It is not a de Polignac number, because 25475150666473 - 2¹³ = 25475150658281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25475150664473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420782290 + ... + 420842827.

It is an arithmetic number, because the mean of its divisors is an integer number (6368998080465).

Almost surely, 2^{25475150666473} is an apocalyptic number.

It is an amenable number.

25475150666473 is a deficient number, since it is larger than the sum of its proper divisors (841655387).

25475150666473 is an equidigital number, since it uses as much as digits as its factorization.

25475150666473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841655386.

The product of its (nonzero) digits is 127008000, while the sum is 61.

The spelling of 25475150666473 in words is "twenty-five trillion, four hundred seventy-five billion, one hundred fifty million, six hundred sixty-six thousand, four hundred seventy-three".