25340947 has 2 divisors, whose sum is σ = 25340948. Its totient is φ = 25340946.

The previous prime is 25340933. The next prime is 25340957. The reversal of 25340947 is 74904352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25340947 - 2¹¹ = 25338899 is a prime.

It is not a weakly prime, because it can be changed into another prime (25340957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12670473 + 12670474.

It is an arithmetic number, because the mean of its divisors is an integer number (12670474).

Almost surely, 2^25340947 is an apocalyptic number.

25340947 is a deficient number, since it is larger than the sum of its proper divisors (1).

25340947 is an equidigital number, since it uses as much as digits as its factorization.

25340947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 25340947 is about 5033.9792411173. The cubic root of 25340947 is about 293.7250232574.

The spelling of 25340947 in words is "twenty-five million, three hundred forty thousand, nine hundred forty-seven".