25957258 has 4 divisors (see below), whose sum is σ = 38935890. Its totient is φ = 12978628.

The previous prime is 25957247. The next prime is 25957259. The reversal of 25957258 is 85275952.

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

It can be written as a sum of positive squares in only one way, i.e., 13446889 + 12510369 = 3667^2 + 3537^2 .

It is not an unprimeable number, because it can be changed into a prime (25957259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6489313 + ... + 6489316.

Almost surely, 2^25957258 is an apocalyptic number.

25957258 is a deficient number, since it is larger than the sum of its proper divisors (12978632).

25957258 is a wasteful number, since it uses less digits than its factorization.

25957258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12978631.

The product of its digits is 252000, while the sum is 43.

The square root of 25957258 is about 5094.8265917497. The cubic root of 25957258 is about 296.0871806144.

The spelling of 25957258 in words is "twenty-five million, nine hundred fifty-seven thousand, two hundred fifty-eight".