25068537289 has 4 divisors (see below), whose sum is σ = 25068949380. Its totient is φ = 25068125200.

The previous prime is 25068537133. The next prime is 25068537301. The reversal of 25068537289 is 98273586052.

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 3713683600 + 21354853689 = 60940^2 + 146133^2 .

It is a cyclic number.

It is not a de Polignac number, because 25068537289 - 2¹³ = 25068529097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25068537089) 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, 94762 + ... + 243139.

It is an arithmetic number, because the mean of its divisors is an integer number (6267237345).

Almost surely, 2^25068537289 is an apocalyptic number.

It is an amenable number.

25068537289 is a deficient number, since it is larger than the sum of its proper divisors (412091).

25068537289 is an equidigital number, since it uses as much as digits as its factorization.

25068537289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412090.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 25068537289 in words is "twenty-five billion, sixty-eight million, five hundred thirty-seven thousand, two hundred eighty-nine".