25525255505503 has 16 divisors (see below), whose sum is σ = 28238202368320. Its totient is φ = 22919669611776.

The previous prime is 25525255505501. The next prime is 25525255505611. The reversal of 25525255505503 is 30550555252552.

It is not a de Polignac number, because 25525255505503 - 2¹ = 25525255505501 is a prime.

It is a super-2 number, since 2×25525255505503² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25525255505501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4050798 + ... + 8213371.

It is an arithmetic number, because the mean of its divisors is an integer number (1764887648020).

Almost surely, 2^{25525255505503} is an apocalyptic number.

25525255505503 is a deficient number, since it is larger than the sum of its proper divisors (2712946862817).

25525255505503 is a wasteful number, since it uses less digits than its factorization.

25525255505503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12268546.

The product of its (nonzero) digits is 9375000, while the sum is 49.

The spelling of 25525255505503 in words is "twenty-five trillion, five hundred twenty-five billion, two hundred fifty-five million, five hundred five thousand, five hundred three".