25126660545 has 16 divisors (see below), whose sum is σ = 45945893760. Its totient is φ = 11486473344.

The previous prime is 25126660529. The next prime is 25126660571. The reversal of 25126660545 is 54506662152.

It is a happy number.

It is not a de Polignac number, because 25126660545 - 2⁴ = 25126660529 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25126660497 and 25126660506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119650660 + ... + 119650869.

It is an arithmetic number, because the mean of its divisors is an integer number (2871618360).

Almost surely, 2^25126660545 is an apocalyptic number.

It is an amenable number.

25126660545 is a deficient number, since it is larger than the sum of its proper divisors (20819233215).

25126660545 is a wasteful number, since it uses less digits than its factorization.

25126660545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239301544.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 25126660545 in words is "twenty-five billion, one hundred twenty-six million, six hundred sixty thousand, five hundred forty-five".