25606426 has 4 divisors (see below), whose sum is σ = 38409642. Its totient is φ = 12803212.

The previous prime is 25606423. The next prime is 25606463. The reversal of 25606426 is 62460652.

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., 23030401 + 2576025 = 4799^2 + 1605^2 .

It is not an unprimeable number, because it can be changed into a prime (25606423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6401605 + ... + 6401608.

Almost surely, 2^25606426 is an apocalyptic number.

25606426 is a deficient number, since it is larger than the sum of its proper divisors (12803216).

25606426 is a wasteful number, since it uses less digits than its factorization.

25606426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12803215.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 25606426 is about 5060.2792413067. The cubic root of 25606426 is about 294.7471778140.

The spelling of 25606426 in words is "twenty-five million, six hundred six thousand, four hundred twenty-six".