25602049 has 8 divisors (see below), whose sum is σ = 28312992. Its totient is φ = 22955040.

The previous prime is 25602019. The next prime is 25602053. The reversal of 25602049 is 94020652.

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

It is a cyclic number.

It is not a de Polignac number, because 25602049 - 2¹⁹ = 25077761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25602019) 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, 15139 + ... + 16744.

It is an arithmetic number, because the mean of its divisors is an integer number (3539124).

Almost surely, 2^25602049 is an apocalyptic number.

It is an amenable number.

25602049 is a deficient number, since it is larger than the sum of its proper divisors (2710943).

25602049 is a wasteful number, since it uses less digits than its factorization.

25602049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31967.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 25602049 is about 5059.8467368093. The cubic root of 25602049 is about 294.7303827862.

The spelling of 25602049 in words is "twenty-five million, six hundred two thousand, forty-nine".