25550030002565 has 32 divisors (see below), whose sum is σ = 30845828160000. Its totient is φ = 20316548874240.

The previous prime is 25550030002561. The next prime is 25550030002579. The reversal of 25550030002565 is 56520003005552.

It is not a de Polignac number, because 25550030002565 - 2² = 25550030002561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25550030002561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2697137669 + ... + 2697147141.

It is an arithmetic number, because the mean of its divisors is an integer number (963932130000).

Almost surely, 2^{25550030002565} is an apocalyptic number.

It is an amenable number.

25550030002565 is a deficient number, since it is larger than the sum of its proper divisors (5295798157435).

25550030002565 is a wasteful number, since it uses less digits than its factorization.

25550030002565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14237.

The product of its (nonzero) digits is 225000, while the sum is 38.

The spelling of 25550030002565 in words is "twenty-five trillion, five hundred fifty billion, thirty million, two thousand, five hundred sixty-five".