25431093 has 18 divisors (see below), whose sum is σ = 37235042. Its totient is φ = 16725600.

The previous prime is 25431073. The next prime is 25431151. The reversal of 25431093 is 39013452.

It can be written as a sum of positive squares in 3 ways, for example, as 13089924 + 12341169 = 3618^2 + 3513^2 .

It is not a de Polignac number, because 25431093 - 2⁸ = 25430837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25431013) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 91671 + ... + 91947.

Almost surely, 2^25431093 is an apocalyptic number.

It is an amenable number.

25431093 is a deficient number, since it is larger than the sum of its proper divisors (11803949).

25431093 is a wasteful number, since it uses less digits than its factorization.

25431093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 25431093 is about 5042.9250440593. The cubic root of 25431093 is about 294.0729029260.

The spelling of 25431093 in words is "twenty-five million, four hundred thirty-one thousand, ninety-three".