25260002261 has 12 divisors (see below), whose sum is σ = 27473084352. Its totient is φ = 23214172176.

The previous prime is 25260002197. The next prime is 25260002267. The reversal of 25260002261 is 16220006252.

It is not a de Polignac number, because 25260002261 - 2⁶ = 25260002197 is a prime.

It is a super-2 number, since 2×25260002261² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25260002261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25260002267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 290861 + ... + 367586.

It is an arithmetic number, because the mean of its divisors is an integer number (2289423696).

Almost surely, 2^25260002261 is an apocalyptic number.

It is an amenable number.

25260002261 is a deficient number, since it is larger than the sum of its proper divisors (2213082091).

25260002261 is a wasteful number, since it uses less digits than its factorization.

25260002261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658700 (or 658687 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 25260002261 in words is "twenty-five billion, two hundred sixty million, two thousand, two hundred sixty-one".