25185047 has 2 divisors, whose sum is σ = 25185048. Its totient is φ = 25185046.

The previous prime is 25185011. The next prime is 25185053. The reversal of 25185047 is 74058152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25185047 - 2⁸ = 25184791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25185247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12592523 + 12592524.

It is an arithmetic number, because the mean of its divisors is an integer number (12592524).

Almost surely, 2^25185047 is an apocalyptic number.

25185047 is a deficient number, since it is larger than the sum of its proper divisors (1).

25185047 is an equidigital number, since it uses as much as digits as its factorization.

25185047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 25185047 is about 5018.4705837536. The cubic root of 25185047 is about 293.1214420458.

The spelling of 25185047 in words is "twenty-five million, one hundred eighty-five thousand, forty-seven".