25541663 has 8 divisors (see below), whose sum is σ = 30197280. Its totient is φ = 21137760.

The previous prime is 25541657. The next prime is 25541669. The reversal of 25541663 is 36614552.

It is an interprime number because it is at equal distance from previous prime (25541657) and next prime (25541669).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25541663 - 2⁸ = 25541407 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 (25541669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62708 + ... + 63113.

It is an arithmetic number, because the mean of its divisors is an integer number (3774660).

Almost surely, 2^25541663 is an apocalyptic number.

25541663 is a deficient number, since it is larger than the sum of its proper divisors (4655617).

25541663 is a wasteful number, since it uses less digits than its factorization.

25541663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125857.

The product of its digits is 21600, while the sum is 32.

The square root of 25541663 is about 5053.8760372609. The cubic root of 25541663 is about 294.4984794731.

The spelling of 25541663 in words is "twenty-five million, five hundred forty-one thousand, six hundred sixty-three".