25501523427 has 12 divisors (see below), whose sum is σ = 36841857000. Its totient is φ = 16998097248.

The previous prime is 25501523423. The next prime is 25501523471. The reversal of 25501523427 is 72432510552.

25501523427 is a `hidden beast` number, since 2 + 550 + 1 + 52 + 34 + 27 = 666.

It is not a de Polignac number, because 25501523427 - 2² = 25501523423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25501523391 and 25501523400.

It is not an unprimeable number, because it can be changed into a prime (25501523423) 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 11 ways as a sum of consecutive naturals, for example, 187177 + ... + 293322.

It is an arithmetic number, because the mean of its divisors is an integer number (3070154750).

Almost surely, 2^25501523427 is an apocalyptic number.

25501523427 is a deficient number, since it is larger than the sum of its proper divisors (11340333573).

25501523427 is a wasteful number, since it uses less digits than its factorization.

25501523427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486402 (or 486399 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The spelling of 25501523427 in words is "twenty-five billion, five hundred one million, five hundred twenty-three thousand, four hundred twenty-seven".