25485067553 has 6 divisors (see below), whose sum is σ = 28012512402. Its totient is φ = 23168243120.

The previous prime is 25485067549. The next prime is 25485067579. The reversal of 25485067553 is 35576058452.

It can be written as a sum of positive squares in only one way, i.e., 22999845649 + 2485221904 = 151657^2 + 49852^2 .

It is not a de Polignac number, because 25485067553 - 2² = 25485067549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25485067583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105310076 + ... + 105310317.

It is an arithmetic number, because the mean of its divisors is an integer number (4668752067).

Almost surely, 2^25485067553 is an apocalyptic number.

It is an amenable number.

25485067553 is a deficient number, since it is larger than the sum of its proper divisors (2527444849).

25485067553 is a wasteful number, since it uses less digits than its factorization.

25485067553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210620415 (or 210620404 counting only the distinct ones).

The product of its (nonzero) digits is 5040000, while the sum is 50.

The spelling of 25485067553 in words is "twenty-five billion, four hundred eighty-five million, sixty-seven thousand, five hundred fifty-three".