25542659 has 4 divisors (see below), whose sum is σ = 25604040. Its totient is φ = 25481280.

The previous prime is 25542641. The next prime is 25542677. The reversal of 25542659 is 95624552.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25542641) and next prime (25542677).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25542659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25542679) 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, 30062 + ... + 30899.

It is an arithmetic number, because the mean of its divisors is an integer number (6401010).

Almost surely, 2^25542659 is an apocalyptic number.

25542659 is a deficient number, since it is larger than the sum of its proper divisors (61381).

25542659 is an equidigital number, since it uses as much as digits as its factorization.

25542659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61380.

The product of its digits is 108000, while the sum is 38.

The square root of 25542659 is about 5053.9745745304. The cubic root of 25542659 is about 294.5023074237.

The spelling of 25542659 in words is "twenty-five million, five hundred forty-two thousand, six hundred fifty-nine".