25900459253 has 4 divisors (see below), whose sum is σ = 25904243340. Its totient is φ = 25896675168.

The previous prime is 25900459243. The next prime is 25900459267. The reversal of 25900459253 is 35295400952.

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 1860887044 + 24039572209 = 43138^2 + 155047^2 .

It is a cyclic number.

It is not a de Polignac number, because 25900459253 - 2¹⁰ = 25900458229 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 (25900459243) 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, 1881758 + ... + 1895471.

It is an arithmetic number, because the mean of its divisors is an integer number (6476060835).

Almost surely, 2^25900459253 is an apocalyptic number.

It is an amenable number.

25900459253 is a deficient number, since it is larger than the sum of its proper divisors (3784087).

25900459253 is an equidigital number, since it uses as much as digits as its factorization.

25900459253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784086.

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 25900459253 in words is "twenty-five billion, nine hundred million, four hundred fifty-nine thousand, two hundred fifty-three".