25722986 has 4 divisors (see below), whose sum is σ = 38584482. Its totient is φ = 12861492.

The previous prime is 25722899. The next prime is 25723007. The reversal of 25722986 is 68922752.

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

It can be written as a sum of positive squares in only one way, i.e., 14707225 + 11015761 = 3835^2 + 3319^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6430745 + ... + 6430748.

Almost surely, 2^25722986 is an apocalyptic number.

25722986 is a deficient number, since it is larger than the sum of its proper divisors (12861496).

25722986 is a wasteful number, since it uses less digits than its factorization.

25722986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12861495.

The product of its digits is 120960, while the sum is 41.

The square root of 25722986 is about 5071.7833155607. The cubic root of 25722986 is about 295.1937289204.

The spelling of 25722986 in words is "twenty-five million, seven hundred twenty-two thousand, nine hundred eighty-six".