25260613453 has 4 divisors (see below), whose sum is σ = 25293808188. Its totient is φ = 25227418720.

The previous prime is 25260613451. The next prime is 25260613459. The reversal of 25260613453 is 35431606252.

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 6221581129 + 19039032324 = 78877^2 + 137982^2 .

It is a cyclic number.

It is not a de Polignac number, because 25260613453 - 2¹ = 25260613451 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 (25260613451) 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, 16596226 + ... + 16597747.

It is an arithmetic number, because the mean of its divisors is an integer number (6323452047).

Almost surely, 2^25260613453 is an apocalyptic number.

It is an amenable number.

25260613453 is a deficient number, since it is larger than the sum of its proper divisors (33194735).

25260613453 is an equidigital number, since it uses as much as digits as its factorization.

25260613453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33194734.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 25260613453 in words is "twenty-five billion, two hundred sixty million, six hundred thirteen thousand, four hundred fifty-three".