25278000055525 has 24 divisors (see below), whose sum is σ = 37380038845824. Its totient is φ = 16579855934400.

The previous prime is 25278000055523. The next prime is 25278000055537. The reversal of 25278000055525 is 52555000087252.

It is not a de Polignac number, because 25278000055525 - 2¹ = 25278000055523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25278000055523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3140120206 + ... + 3140128255.

It is an arithmetic number, because the mean of its divisors is an integer number (1557501618576).

Almost surely, 2^{25278000055525} is an apocalyptic number.

25278000055525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25278000055525 is a deficient number, since it is larger than the sum of its proper divisors (12102038790299).

25278000055525 is a wasteful number, since it uses less digits than its factorization.

25278000055525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6280248501 (or 6280248496 counting only the distinct ones).

The product of its (nonzero) digits is 1400000, while the sum is 46.

The spelling of 25278000055525 in words is "twenty-five trillion, two hundred seventy-eight billion, fifty-five thousand, five hundred twenty-five".