25655311465 has 48 divisors (see below), whose sum is σ = 36380482560. Its totient is φ = 17314200960.

The previous prime is 25655311463. The next prime is 25655311471. The reversal of 25655311465 is 56411355652.

It is a happy number.

It is not a de Polignac number, because 25655311465 - 2¹ = 25655311463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25655311463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15011031 + ... + 15012739.

It is an arithmetic number, because the mean of its divisors is an integer number (757926720).

Almost surely, 2^25655311465 is an apocalyptic number.

It is an amenable number.

25655311465 is a deficient number, since it is larger than the sum of its proper divisors (10725171095).

25655311465 is a wasteful number, since it uses less digits than its factorization.

25655311465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662 (or 2655 counting only the distinct ones).

The product of its digits is 540000, while the sum is 43.

The spelling of 25655311465 in words is "twenty-five billion, six hundred fifty-five million, three hundred eleven thousand, four hundred sixty-five".