25673121 has 6 divisors (see below), whose sum is σ = 37083410. Its totient is φ = 17115408.

The previous prime is 25673113. The next prime is 25673143. The reversal of 25673121 is 12137652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21986721 + 3686400 = 4689^2 + 1920^2 .

It is not a de Polignac number, because 25673121 - 2³ = 25673113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25673101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1426276 + ... + 1426293.

Almost surely, 2^25673121 is an apocalyptic number.

It is an amenable number.

25673121 is a deficient number, since it is larger than the sum of its proper divisors (11410289).

25673121 is a wasteful number, since it uses less digits than its factorization.

25673121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852575 (or 2852572 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 25673121 is about 5066.8650070828. The cubic root of 25673121 is about 295.0028573888.

The spelling of 25673121 in words is "twenty-five million, six hundred seventy-three thousand, one hundred twenty-one".