25416947 has 4 divisors (see below), whose sum is σ = 25650240. Its totient is φ = 25183656.

The previous prime is 25416929. The next prime is 25416967. The reversal of 25416947 is 74961452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25416947 - 2⁶ = 25416883 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25416947.

It is not an unprimeable number, because it can be changed into a prime (25416967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116483 + ... + 116700.

It is an arithmetic number, because the mean of its divisors is an integer number (6412560).

Almost surely, 2^25416947 is an apocalyptic number.

25416947 is a deficient number, since it is larger than the sum of its proper divisors (233293).

25416947 is a wasteful number, since it uses less digits than its factorization.

25416947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233292.

The product of its digits is 60480, while the sum is 38.

The square root of 25416947 is about 5041.5222899438. The cubic root of 25416947 is about 294.0183669708.

The spelling of 25416947 in words is "twenty-five million, four hundred sixteen thousand, nine hundred forty-seven".