25155541289 has 4 divisors (see below), whose sum is σ = 25156429056. Its totient is φ = 25154653524.

The previous prime is 25155541277. The next prime is 25155541297. The reversal of 25155541289 is 98214555152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25155541289 - 2⁴ = 25155541273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25155541249) 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, 399929 + ... + 458534.

It is an arithmetic number, because the mean of its divisors is an integer number (6289107264).

Almost surely, 2^25155541289 is an apocalyptic number.

It is an amenable number.

25155541289 is a deficient number, since it is larger than the sum of its proper divisors (887767).

25155541289 is an equidigital number, since it uses as much as digits as its factorization.

25155541289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887766.

The product of its digits is 720000, while the sum is 47.

The spelling of 25155541289 in words is "twenty-five billion, one hundred fifty-five million, five hundred forty-one thousand, two hundred eighty-nine".