25422493 has 4 divisors (see below), whose sum is σ = 25439868. Its totient is φ = 25405120.

The previous prime is 25422487. The next prime is 25422499. The reversal of 25422493 is 39422452.

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

It is an interprime number because it is at equal distance from previous prime (25422487) and next prime (25422499).

It can be written as a sum of positive squares in 2 ways, for example, as 16016004 + 9406489 = 4002^2 + 3067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25422493 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25422499) 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, 6268 + ... + 9493.

It is an arithmetic number, because the mean of its divisors is an integer number (6359967).

Almost surely, 2^25422493 is an apocalyptic number.

It is an amenable number.

25422493 is a deficient number, since it is larger than the sum of its proper divisors (17375).

25422493 is a wasteful number, since it uses less digits than its factorization.

25422493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17374.

The product of its digits is 17280, while the sum is 31.

The square root of 25422493 is about 5042.0722922227. The cubic root of 25422493 is about 294.0397504369.

The spelling of 25422493 in words is "twenty-five million, four hundred twenty-two thousand, four hundred ninety-three".