25066949 has 4 divisors (see below), whose sum is σ = 25678380. Its totient is φ = 24455520.

The previous prime is 25066931. The next prime is 25066969. The reversal of 25066949 is 94966052.

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 2122849 + 22944100 = 1457^2 + 4790^2 .

It is a cyclic number.

It is not a de Polignac number, because 25066949 - 2²⁰ = 24018373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 611389 = 25066949 / (2 + 5 + 0 + 6 + 6 + 9 + 4 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25066919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305654 + ... + 305735.

It is an arithmetic number, because the mean of its divisors is an integer number (6419595).

Almost surely, 2^25066949 is an apocalyptic number.

It is an amenable number.

25066949 is a deficient number, since it is larger than the sum of its proper divisors (611431).

25066949 is an equidigital number, since it uses as much as digits as its factorization.

25066949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611430.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 25066949 is about 5006.6904238229. The cubic root of 25066949 is about 292.6625545909.

The spelling of 25066949 in words is "twenty-five million, sixty-six thousand, nine hundred forty-nine".