25388047 has 6 divisors (see below), whose sum is σ = 26794968. Its totient is φ = 24051492.

The previous prime is 25388029. The next prime is 25388053. The reversal of 25388047 is 74088352.

It is not a de Polignac number, because 25388047 - 2¹¹ = 25385999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25387997 and 25388015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25388057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34803 + ... + 35524.

It is an arithmetic number, because the mean of its divisors is an integer number (4465828).

Almost surely, 2^25388047 is an apocalyptic number.

25388047 is a deficient number, since it is larger than the sum of its proper divisors (1406921).

25388047 is an equidigital number, since it uses as much as digits as its factorization.

25388047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70365 (or 70346 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 25388047 is about 5038.6552769563. The cubic root of 25388047 is about 293.9068881563.

It can be divided in two parts, 2538 and 8047, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 25388047 in words is "twenty-five million, three hundred eighty-eight thousand, forty-seven".