25500049 has 4 divisors (see below), whose sum is σ = 25981236. Its totient is φ = 25018864.

The previous prime is 25500047. The next prime is 25500053. The reversal of 25500049 is 94000552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13987600 + 11512449 = 3740^2 + 3393^2 .

It is a cyclic number.

It is not a de Polignac number, because 25500049 - 2¹ = 25500047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25499996 and 25500032.

It is not an unprimeable number, because it can be changed into a prime (25500043) 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, 240514 + ... + 240619.

It is an arithmetic number, because the mean of its divisors is an integer number (6495309).

Almost surely, 2^25500049 is an apocalyptic number.

It is an amenable number.

25500049 is a deficient number, since it is larger than the sum of its proper divisors (481187).

25500049 is an equidigital number, since it uses as much as digits as its factorization.

25500049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481186.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 25500049 is about 5049.7573209017. The cubic root of 25500049 is about 294.3384543744.

The spelling of 25500049 in words is "twenty-five million, five hundred thousand, forty-nine".