25247945 has 8 divisors (see below), whose sum is σ = 30750144. Its totient is φ = 19896624.

The previous prime is 25247939. The next prime is 25247969. The reversal of 25247945 is 54974252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25247945 - 2¹² = 25243849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25247899 and 25247908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37349 + ... + 38018.

It is an arithmetic number, because the mean of its divisors is an integer number (3843768).

Almost surely, 2^25247945 is an apocalyptic number.

It is an amenable number.

25247945 is a deficient number, since it is larger than the sum of its proper divisors (5502199).

25247945 is an equidigital number, since it uses as much as digits as its factorization.

25247945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75439.

The product of its digits is 100800, while the sum is 38.

The square root of 25247945 is about 5024.7333262572. The cubic root of 25247945 is about 293.3652563685.

The spelling of 25247945 in words is "twenty-five million, two hundred forty-seven thousand, nine hundred forty-five".