25438105 has 24 divisors (see below), whose sum is σ = 38741760. Its totient is φ = 15855840.

The previous prime is 25438057. The next prime is 25438111. The reversal of 25438105 is 50183452.

It is not a de Polignac number, because 25438105 - 2¹⁹ = 24913817 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2025 + ... + 7414.

It is an arithmetic number, because the mean of its divisors is an integer number (1614240).

Almost surely, 2^25438105 is an apocalyptic number.

It is an amenable number.

25438105 is a deficient number, since it is larger than the sum of its proper divisors (13303655).

25438105 is a wasteful number, since it uses less digits than its factorization.

25438105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9469 (or 9462 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 25438105 is about 5043.6202275746. The cubic root of 25438105 is about 294.0999282385.

It can be divided in two parts, 2543 and 8105, that added together give a cube (10648 = 22³).

The spelling of 25438105 in words is "twenty-five million, four hundred thirty-eight thousand, one hundred five".