25106501273 has 12 divisors (see below), whose sum is σ = 29219674932. Its totient is φ = 21509429760.

The previous prime is 25106501239. The next prime is 25106501281. The reversal of 25106501273 is 37210560152.

It can be written as a sum of positive squares in 2 ways, for example, as 5154091264 + 19952410009 = 71792^2 + 141253^2 .

It is not a de Polignac number, because 25106501273 - 2²⁶ = 25039392409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25106503273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21140 + ... + 225077.

It is an arithmetic number, because the mean of its divisors is an integer number (2434972911).

Almost surely, 2^25106501273 is an apocalyptic number.

It is an amenable number.

25106501273 is a deficient number, since it is larger than the sum of its proper divisors (4113173659).

25106501273 is a wasteful number, since it uses less digits than its factorization.

25106501273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248312 (or 248305 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The spelling of 25106501273 in words is "twenty-five billion, one hundred six million, five hundred one thousand, two hundred seventy-three".