25400313 has 12 divisors (see below), whose sum is σ = 36766548. Its totient is φ = 16897920.

The previous prime is 25400311. The next prime is 25400341. The reversal of 25400313 is 31300452.

It can be written as a sum of positive squares in 2 ways, for example, as 4359744 + 21040569 = 2088^2 + 4587^2 .

It is not a de Polignac number, because 25400313 - 2¹ = 25400311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25400311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1981 + ... + 7397.

It is an arithmetic number, because the mean of its divisors is an integer number (3063879).

Almost surely, 2^25400313 is an apocalyptic number.

It is an amenable number.

25400313 is a deficient number, since it is larger than the sum of its proper divisors (11366235).

25400313 is a wasteful number, since it uses less digits than its factorization.

25400313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5944 (or 5941 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 25400313 is about 5039.8723198113. The cubic root of 25400313 is about 293.9542133334.

Adding to 25400313 its reverse (31300452), we get a palindrome (56700765).

It can be divided in two parts, 254003 and 13, that added together give a square (254016 = 504²).

The spelling of 25400313 in words is "twenty-five million, four hundred thousand, three hundred thirteen".