25440093 has 48 divisors (see below), whose sum is σ = 44518656. Its totient is φ = 13685760.

The previous prime is 25440091. The next prime is 25440167. The reversal of 25440093 is 39004452.

25440093 is a `hidden beast` number, since 254 + 400 + 9 + 3 = 666.

It is not a de Polignac number, because 25440093 - 2¹ = 25440091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25440091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140463 + ... + 140643.

It is an arithmetic number, because the mean of its divisors is an integer number (927472).

Almost surely, 2^25440093 is an apocalyptic number.

25440093 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25440093 is a deficient number, since it is larger than the sum of its proper divisors (19078563).

25440093 is a wasteful number, since it uses less digits than its factorization.

25440093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 25440093 is about 5043.8173043837. The cubic root of 25440093 is about 294.1075893886.

The spelling of 25440093 in words is "twenty-five million, four hundred forty thousand, ninety-three".