25772906 has 4 divisors (see below), whose sum is σ = 38659362. Its totient is φ = 12886452.

The previous prime is 25772891. The next prime is 25772921. The reversal of 25772906 is 60927752.

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

It is an interprime number because it is at equal distance from previous prime (25772891) and next prime (25772921).

It can be written as a sum of positive squares in only one way, i.e., 18966025 + 6806881 = 4355^2 + 2609^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25772906.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6443225 + ... + 6443228.

Almost surely, 2^25772906 is an apocalyptic number.

25772906 is a deficient number, since it is larger than the sum of its proper divisors (12886456).

25772906 is a wasteful number, since it uses less digits than its factorization.

25772906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12886455.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 25772906 is about 5076.7022760843. The cubic root of 25772906 is about 295.3845640560.

The spelling of 25772906 in words is "twenty-five million, seven hundred seventy-two thousand, nine hundred six".