25000049 has 8 divisors (see below), whose sum is σ = 25738920. Its totient is φ = 24264576.

The previous prime is 25000033. The next prime is 25000069. The reversal of 25000049 is 94000052.

It can be written as a sum of positive squares in 4 ways, for example, as 3312400 + 21687649 = 1820^2 + 4657^2 .

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 25000049 - 2⁴ = 25000033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25000009) 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, 25757 + ... + 26709.

It is an arithmetic number, because the mean of its divisors is an integer number (3217365).

Almost surely, 2^25000049 is an apocalyptic number.

It is an amenable number.

25000049 is a deficient number, since it is larger than the sum of its proper divisors (738871).

25000049 is an equidigital number, since it uses as much as digits as its factorization.

25000049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 25000049 is about 5000.0048999976. The cubic root of 25000049 is about 292.4019648570.

It can be divided in two parts, 250000 and 49, that multiplied together give a square (12250000 = 3500²).

The spelling of 25000049 in words is "twenty-five million, forty-nine", and thus it is an aban number and an uban number.