25402449 has 8 divisors (see below), whose sum is σ = 35652640. Its totient is φ = 16043616.

The previous prime is 25402439. The next prime is 25402453. The reversal of 25402449 is 94420452.

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

It is not a de Polignac number, because 25402449 - 2⁵ = 25402417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25402439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222772 + ... + 222885.

It is an arithmetic number, because the mean of its divisors is an integer number (4456580).

Almost surely, 2^25402449 is an apocalyptic number.

It is an amenable number.

25402449 is a deficient number, since it is larger than the sum of its proper divisors (10250191).

25402449 is a wasteful number, since it uses less digits than its factorization.

25402449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445679.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 25402449 is about 5040.0842254867. The cubic root of 25402449 is about 293.9624529773.

The spelling of 25402449 in words is "twenty-five million, four hundred two thousand, four hundred forty-nine".