25381593 has 28 divisors (see below), whose sum is σ = 39125028. Its totient is φ = 16446240.

The previous prime is 25381571. The next prime is 25381597. The reversal of 25381593 is 39518352.

It can be written as a sum of positive squares in 2 ways, for example, as 19607184 + 5774409 = 4428^2 + 2403^2 .

It is not a de Polignac number, because 25381593 - 2¹² = 25377497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25381597) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 26503 + ... + 27443.

Almost surely, 2^25381593 is an apocalyptic number.

It is an amenable number.

25381593 is a deficient number, since it is larger than the sum of its proper divisors (13743435).

25381593 is an frugal number, since it uses more digits than its factorization.

25381593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 981 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 25381593 is about 5038.0147875924. The cubic root of 25381593 is about 293.8819809520.

The spelling of 25381593 in words is "twenty-five million, three hundred eighty-one thousand, five hundred ninety-three".