25530555830247 has 80 divisors (see below), whose sum is σ = 41297905712448. Its totient is φ = 15624879160320.

The previous prime is 25530555830237. The next prime is 25530555830257. The reversal of 25530555830247 is 74203855503552.

It is a happy number.

25530555830247 is a `hidden beast` number, since 2 + 5 + 5 + 3 + 0 + 55 + 583 + 0 + 2 + 4 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (25530555830237) and next prime (25530555830257).

It is not a de Polignac number, because 25530555830247 - 2²³ = 25530547441639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25530555830193 and 25530555830202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25530555830207) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 164147097 + ... + 164302557.

Almost surely, 2^{25530555830247} is an apocalyptic number.

25530555830247 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

25530555830247 is a deficient number, since it is larger than the sum of its proper divisors (15767349882201).

25530555830247 is a wasteful number, since it uses less digits than its factorization.

25530555830247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156342 (or 156333 counting only the distinct ones).

The product of its (nonzero) digits is 25200000, while the sum is 54.

The spelling of 25530555830247 in words is "twenty-five trillion, five hundred thirty billion, five hundred fifty-five million, eight hundred thirty thousand, two hundred forty-seven".