25409438 has 8 divisors (see below), whose sum is σ = 38249688. Its totient is φ = 12659544.

The previous prime is 25409437. The next prime is 25409453. The reversal of 25409438 is 83490452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25409398 and 25409407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25409437) 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, 21881 + ... + 23012.

It is an arithmetic number, because the mean of its divisors is an integer number (4781211).

Almost surely, 2^25409438 is an apocalyptic number.

25409438 is a deficient number, since it is larger than the sum of its proper divisors (12840250).

25409438 is a wasteful number, since it uses less digits than its factorization.

25409438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45178.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 25409438 is about 5040.7775193912. Note that the first 3 decimals coincide. The cubic root of 25409438 is about 293.9894098951.

The spelling of 25409438 in words is "twenty-five million, four hundred nine thousand, four hundred thirty-eight".