25325409 has 16 divisors (see below), whose sum is σ = 34828992. Its totient is φ = 16359168.

The previous prime is 25325407. The next prime is 25325411. The reversal of 25325409 is 90452352.

It is an interprime number because it is at equal distance from previous prime (25325407) and next prime (25325411).

It is not a de Polignac number, because 25325409 - 2¹ = 25325407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25325401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16957 + ... + 18389.

It is an arithmetic number, because the mean of its divisors is an integer number (2176812).

Almost surely, 2^25325409 is an apocalyptic number.

It is an amenable number.

25325409 is a deficient number, since it is larger than the sum of its proper divisors (9503583).

25325409 is a wasteful number, since it uses less digits than its factorization.

25325409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 25325409 is about 5032.4356925847. The cubic root of 25325409 is about 293.6649777176.

The spelling of 25325409 in words is "twenty-five million, three hundred twenty-five thousand, four hundred nine".