25545476261 has 8 divisors (see below), whose sum is σ = 25889848320. Its totient is φ = 25201629648.

The previous prime is 25545476213. The next prime is 25545476267. The reversal of 25545476261 is 16267454552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25545476261 - 2⁶ = 25545476197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25545476267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32981 + ... + 228426.

It is an arithmetic number, because the mean of its divisors is an integer number (3236231040).

Almost surely, 2^25545476261 is an apocalyptic number.

It is an amenable number.

25545476261 is a deficient number, since it is larger than the sum of its proper divisors (344372059).

25545476261 is a wasteful number, since it uses less digits than its factorization.

25545476261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262723.

The product of its digits is 2016000, while the sum is 47.

The spelling of 25545476261 in words is "twenty-five billion, five hundred forty-five million, four hundred seventy-six thousand, two hundred sixty-one".