25743993 has 24 divisors (see below), whose sum is σ = 39538656. Its totient is φ = 14774400.

The previous prime is 25743973. The next prime is 25743997. The reversal of 25743993 is 39934752.

It is not a de Polignac number, because 25743993 - 2⁶ = 25743929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25743997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10833 + ... + 12993.

It is an arithmetic number, because the mean of its divisors is an integer number (1647444).

Almost surely, 2^25743993 is an apocalyptic number.

It is an amenable number.

25743993 is a deficient number, since it is larger than the sum of its proper divisors (13794663).

25743993 is a wasteful number, since it uses less digits than its factorization.

25743993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213 (or 2194 counting only the distinct ones).

The product of its digits is 204120, while the sum is 42.

The square root of 25743993 is about 5073.8538607256. The cubic root of 25743993 is about 295.2740649455.

The spelling of 25743993 in words is "twenty-five million, seven hundred forty-three thousand, nine hundred ninety-three".