25980807 has 4 divisors (see below), whose sum is σ = 34641080. Its totient is φ = 17320536.

The previous prime is 25980803. The next prime is 25980833. The reversal of 25980807 is 70808952.

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

It is not a de Polignac number, because 25980807 - 2² = 25980803 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 (25980803) 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, 4330132 + ... + 4330137.

It is an arithmetic number, because the mean of its divisors is an integer number (8660270).

Almost surely, 2^25980807 is an apocalyptic number.

25980807 is a deficient number, since it is larger than the sum of its proper divisors (8660273).

25980807 is an equidigital number, since it uses as much as digits as its factorization.

25980807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8660272.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 25980807 is about 5097.1371376489. The cubic root of 25980807 is about 296.1766925025.

The spelling of 25980807 in words is "twenty-five million, nine hundred eighty thousand, eight hundred seven".