25865427745 has 8 divisors (see below), whose sum is σ = 32388014016. Its totient is φ = 19792675056.

The previous prime is 25865427743. The next prime is 25865427769. The reversal of 25865427745 is 54772456852.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25865427745 - 2¹ = 25865427743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25865427743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112458267 + ... + 112458496.

It is an arithmetic number, because the mean of its divisors is an integer number (4048501752).

Almost surely, 2^25865427745 is an apocalyptic number.

It is an amenable number.

25865427745 is a deficient number, since it is larger than the sum of its proper divisors (6522586271).

25865427745 is a wasteful number, since it uses less digits than its factorization.

25865427745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224916791.

The product of its digits is 18816000, while the sum is 55.

The spelling of 25865427745 in words is "twenty-five billion, eight hundred sixty-five million, four hundred twenty-seven thousand, seven hundred forty-five".