25965973 has 4 divisors (see below), whose sum is σ = 28326528. Its totient is φ = 23605420.

The previous prime is 25965943. The next prime is 25965977. The reversal of 25965973 is 37956952.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25965973 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 (25965977) 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, 1180261 + ... + 1180282.

It is an arithmetic number, because the mean of its divisors is an integer number (7081632).

Almost surely, 2^25965973 is an apocalyptic number.

It is an amenable number.

25965973 is a deficient number, since it is larger than the sum of its proper divisors (2360555).

25965973 is a wasteful number, since it uses less digits than its factorization.

25965973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360554.

The product of its digits is 510300, while the sum is 46.

The square root of 25965973 is about 5095.6817993277. The cubic root of 25965973 is about 296.1203134290.

The spelling of 25965973 in words is "twenty-five million, nine hundred sixty-five thousand, nine hundred seventy-three".