25120947 has 4 divisors (see below), whose sum is σ = 33494600. Its totient is φ = 16747296.

The previous prime is 25120939. The next prime is 25120957. The reversal of 25120947 is 74902152.

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

It is not a de Polignac number, because 25120947 - 2³ = 25120939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25120937) 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, 4186822 + ... + 4186827.

It is an arithmetic number, because the mean of its divisors is an integer number (8373650).

Almost surely, 2^25120947 is an apocalyptic number.

25120947 is a deficient number, since it is larger than the sum of its proper divisors (8373653).

25120947 is an equidigital number, since it uses as much as digits as its factorization.

25120947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8373652.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 25120947 is about 5012.0801071012. The cubic root of 25120947 is about 292.8725503466.

The spelling of 25120947 in words is "twenty-five million, one hundred twenty thousand, nine hundred forty-seven".