25396993 has 4 divisors (see below), whose sum is σ = 25411540. Its totient is φ = 25382448.

The previous prime is 25396981. The next prime is 25397003. The reversal of 25396993 is 39969352.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24671089 + 725904 = 4967^2 + 852^2 .

It is a cyclic number.

It is not a de Polignac number, because 25396993 - 2¹³ = 25388801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25396093) 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, 4230 + ... + 8287.

It is an arithmetic number, because the mean of its divisors is an integer number (6352885).

Almost surely, 2^25396993 is an apocalyptic number.

It is an amenable number.

25396993 is a deficient number, since it is larger than the sum of its proper divisors (14547).

25396993 is a wasteful number, since it uses less digits than its factorization.

25396993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14546.

The product of its digits is 393660, while the sum is 46.

The square root of 25396993 is about 5039.5429356242. The cubic root of 25396993 is about 293.9414054793.

The spelling of 25396993 in words is "twenty-five million, three hundred ninety-six thousand, nine hundred ninety-three".