25772947 has 4 divisors (see below), whose sum is σ = 25819776. Its totient is φ = 25726120.

The previous prime is 25772933. The next prime is 25772951. The reversal of 25772947 is 74927752.

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

It is a cyclic number.

It is not a de Polignac number, because 25772947 - 2⁷ = 25772819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25772147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22579 + ... + 23692.

It is an arithmetic number, because the mean of its divisors is an integer number (6454944).

Almost surely, 2^25772947 is an apocalyptic number.

25772947 is a deficient number, since it is larger than the sum of its proper divisors (46829).

25772947 is an equidigital number, since it uses as much as digits as its factorization.

25772947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46828.

The product of its digits is 246960, while the sum is 43.

The square root of 25772947 is about 5076.7063141371. The cubic root of 25772947 is about 295.3847206902.

The spelling of 25772947 in words is "twenty-five million, seven hundred seventy-two thousand, nine hundred forty-seven".