25340663 has 4 divisors (see below), whose sum is σ = 25420920. Its totient is φ = 25260408.

The previous prime is 25340639. The next prime is 25340683. The reversal of 25340663 is 36604352.

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 25340663 - 2⁶ = 25340599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25340603) 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, 39653 + ... + 40286.

It is an arithmetic number, because the mean of its divisors is an integer number (6355230).

Almost surely, 2^25340663 is an apocalyptic number.

25340663 is a deficient number, since it is larger than the sum of its proper divisors (80257).

25340663 is an equidigital number, since it uses as much as digits as its factorization.

25340663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80256.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 25340663 is about 5033.9510327376. The cubic root of 25340663 is about 293.7239259790.

The spelling of 25340663 in words is "twenty-five million, three hundred forty thousand, six hundred sixty-three".