25259993 has 4 divisors (see below), whose sum is σ = 27556368. Its totient is φ = 22963620.

The previous prime is 25259989. The next prime is 25260007. The reversal of 25259993 is 39995252.

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 not a de Polignac number, because 25259993 - 2² = 25259989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25259953) 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, 1148171 + ... + 1148192.

It is an arithmetic number, because the mean of its divisors is an integer number (6889092).

Almost surely, 2^25259993 is an apocalyptic number.

It is an amenable number.

25259993 is a deficient number, since it is larger than the sum of its proper divisors (2296375).

25259993 is a wasteful number, since it uses less digits than its factorization.

25259993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296374.

The product of its digits is 218700, while the sum is 44.

The square root of 25259993 is about 5025.9320528634. The cubic root of 25259993 is about 293.4119123446.

The spelling of 25259993 in words is "twenty-five million, two hundred fifty-nine thousand, nine hundred ninety-three".