25254993 has 4 divisors (see below), whose sum is σ = 33673328. Its totient is φ = 16836660.

The previous prime is 25254967. The next prime is 25254997. The reversal of 25254993 is 39945252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-25254993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25254997) 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, 4209163 + ... + 4209168.

It is an arithmetic number, because the mean of its divisors is an integer number (8418332).

Almost surely, 2^25254993 is an apocalyptic number.

It is an amenable number.

25254993 is a deficient number, since it is larger than the sum of its proper divisors (8418335).

25254993 is an equidigital number, since it uses as much as digits as its factorization.

25254993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8418334.

The product of its digits is 97200, while the sum is 39.

The square root of 25254993 is about 5025.4346080712. The cubic root of 25254993 is about 293.3925516059.

The spelling of 25254993 in words is "twenty-five million, two hundred fifty-four thousand, nine hundred ninety-three".