25438774 has 4 divisors (see below), whose sum is σ = 38158164. Its totient is φ = 12719386.

The previous prime is 25438741. The next prime is 25438789. The reversal of 25438774 is 47783452.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6359692 + ... + 6359695.

It is an arithmetic number, because the mean of its divisors is an integer number (9539541).

Almost surely, 2^25438774 is an apocalyptic number.

25438774 is a deficient number, since it is larger than the sum of its proper divisors (12719390).

25438774 is a wasteful number, since it uses less digits than its factorization.

25438774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12719389.

The product of its digits is 188160, while the sum is 40.

The square root of 25438774 is about 5043.6865485476. The cubic root of 25438774 is about 294.1025064065.

The spelling of 25438774 in words is "twenty-five million, four hundred thirty-eight thousand, seven hundred seventy-four".