25724049 has 8 divisors (see below), whose sum is σ = 36937152. Its totient is φ = 15830160.

The previous prime is 25724029. The next prime is 25724057. The reversal of 25724049 is 94042752.

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

It is not a de Polignac number, because 25724049 - 2⁸ = 25723793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25724029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329757 + ... + 329834.

It is an arithmetic number, because the mean of its divisors is an integer number (4617144).

Almost surely, 2^25724049 is an apocalyptic number.

It is an amenable number.

25724049 is a deficient number, since it is larger than the sum of its proper divisors (11213103).

25724049 is a wasteful number, since it uses less digits than its factorization.

25724049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659607.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 25724049 is about 5071.8881099646. Note that the first 3 decimals coincide. The cubic root of 25724049 is about 295.1977951488.

The spelling of 25724049 in words is "twenty-five million, seven hundred twenty-four thousand, forty-nine".