25528278052575 has 30 divisors (see below), whose sum is σ = 47287195547064. Its totient is φ = 13615081626960.

The previous prime is 25528278052489. The next prime is 25528278052643. The reversal of 25528278052575 is 57525087282552.

It is a happy number.

25528278052575 is a `hidden beast` number, since 2 + 5 + 5 + 2 + 8 + 2 + 7 + 8 + 0 + 52 + 575 = 666.

It is not a de Polignac number, because 25528278052575 - 2⁹ = 25528278052063 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 6303276507 + ... + 6303280556.

Almost surely, 2^{25528278052575} is an apocalyptic number.

25528278052575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25528278052575 is a deficient number, since it is larger than the sum of its proper divisors (21758917494489).

25528278052575 is a wasteful number, since it uses less digits than its factorization.

25528278052575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12606557085 (or 12606557071 counting only the distinct ones).

The product of its (nonzero) digits is 156800000, while the sum is 63.

The spelling of 25528278052575 in words is "twenty-five trillion, five hundred twenty-eight billion, two hundred seventy-eight million, fifty-two thousand, five hundred seventy-five".