25007243 has 4 divisors (see below), whose sum is σ = 25539360. Its totient is φ = 24475128.

The previous prime is 25007237. The next prime is 25007263. The reversal of 25007243 is 34270052.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25007243 is a prime.

It is a super-2 number, since 2×25007243² = 1250724404922098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25007263) 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, 265988 + ... + 266081.

It is an arithmetic number, because the mean of its divisors is an integer number (6384840).

Almost surely, 2^25007243 is an apocalyptic number.

25007243 is a deficient number, since it is larger than the sum of its proper divisors (532117).

25007243 is an equidigital number, since it uses as much as digits as its factorization.

25007243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532116.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 25007243 is about 5000.7242475465. The cubic root of 25007243 is about 292.4300093086.

Adding to 25007243 its reverse (34270052), we get a palindrome (59277295).

The spelling of 25007243 in words is "twenty-five million, seven thousand, two hundred forty-three".