25540611 has 4 divisors (see below), whose sum is σ = 34054152. Its totient is φ = 17027072.

The previous prime is 25540607. The next prime is 25540651. The reversal of 25540611 is 11604552.

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 25540611 - 2² = 25540607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25540651) 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, 4256766 + ... + 4256771.

It is an arithmetic number, because the mean of its divisors is an integer number (8513538).

Almost surely, 2^25540611 is an apocalyptic number.

25540611 is a deficient number, since it is larger than the sum of its proper divisors (8513541).

25540611 is an equidigital number, since it uses as much as digits as its factorization.

25540611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8513540.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 25540611 is about 5053.7719576570. The cubic root of 25540611 is about 294.4944361883.

The spelling of 25540611 in words is "twenty-five million, five hundred forty thousand, six hundred eleven".