25533278078275 has 24 divisors (see below), whose sum is σ = 34539801882624. Its totient is φ = 18569527610400.

The previous prime is 25533278078261. The next prime is 25533278078281. The reversal of 25533278078275 is 57287087233552.

It is not a de Polignac number, because 25533278078275 - 2³⁵ = 25498918339907 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59180382 + ... + 59610268.

It is an arithmetic number, because the mean of its divisors is an integer number (1439158411776).

Almost surely, 2^{25533278078275} is an apocalyptic number.

25533278078275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25533278078275 is a deficient number, since it is larger than the sum of its proper divisors (9006523804349).

25533278078275 is a wasteful number, since it uses less digits than its factorization.

25533278078275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645891 (or 645886 counting only the distinct ones).

The product of its (nonzero) digits is 197568000, while the sum is 64.

The spelling of 25533278078275 in words is "twenty-five trillion, five hundred thirty-three billion, two hundred seventy-eight million, seventy-eight thousand, two hundred seventy-five".