25340409 has 12 divisors (see below), whose sum is σ = 36674352. Its totient is φ = 16860600.

The previous prime is 25340407. The next prime is 25340443. The reversal of 25340409 is 90404352.

25340409 is a `hidden beast` number, since 253 + 4 + 0 + 409 = 666.

It is not a de Polignac number, because 25340409 - 2¹ = 25340407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25340401) 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 11 ways as a sum of consecutive naturals, for example, 2674 + ... + 7604.

It is an arithmetic number, because the mean of its divisors is an integer number (3056196).

Almost surely, 2^25340409 is an apocalyptic number.

It is an amenable number.

25340409 is a deficient number, since it is larger than the sum of its proper divisors (11333943).

25340409 is a wasteful number, since it uses less digits than its factorization.

25340409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5508 (or 5505 counting only the distinct ones).

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

The square root of 25340409 is about 5033.9258039824. The cubic root of 25340409 is about 293.7229446034.

The spelling of 25340409 in words is "twenty-five million, three hundred forty thousand, four hundred nine".