25126601 has 4 divisors (see below), whose sum is σ = 25265604. Its totient is φ = 24987600.

The previous prime is 25126583. The next prime is 25126637. The reversal of 25126601 is 10662152.

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 1263376 + 23863225 = 1124^2 + 4885^2 .

It is a cyclic number.

It is not a de Polignac number, because 25126601 - 2⁶ = 25126537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25126681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69230 + ... + 69591.

It is an arithmetic number, because the mean of its divisors is an integer number (6316401).

Almost surely, 2^25126601 is an apocalyptic number.

It is an amenable number.

25126601 is a deficient number, since it is larger than the sum of its proper divisors (139003).

25126601 is a wasteful number, since it uses less digits than its factorization.

25126601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139002.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 25126601 is about 5012.6441126416. The cubic root of 25126601 is about 292.8945210839.

Adding to 25126601 its reverse (10662152), we get a palindrome (35788753).

The spelling of 25126601 in words is "twenty-five million, one hundred twenty-six thousand, six hundred one".