25993147 has 8 divisors (see below), whose sum is σ = 26307216. Its totient is φ = 25681152.

The previous prime is 25993111. The next prime is 25993157. The reversal of 25993147 is 74139952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25993147 - 2¹⁵ = 25960379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25993157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45888 + ... + 46450.

It is an arithmetic number, because the mean of its divisors is an integer number (3288402).

Almost surely, 2^25993147 is an apocalyptic number.

25993147 is a deficient number, since it is larger than the sum of its proper divisors (314069).

25993147 is a wasteful number, since it uses less digits than its factorization.

25993147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037.

The product of its digits is 68040, while the sum is 40.

The square root of 25993147 is about 5098.3474773695. The cubic root of 25993147 is about 296.2235763670.

The spelling of 25993147 in words is "twenty-five million, nine hundred ninety-three thousand, one hundred forty-seven".