25403313 has 16 divisors (see below), whose sum is σ = 37368576. Its totient is φ = 15250560.

The previous prime is 25403311. The next prime is 25403317. The reversal of 25403313 is 31330452.

It is not a de Polignac number, because 25403313 - 2¹ = 25403311 is a prime.

It is a super-2 number, since 2×25403313² = 1290656622751938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25403313.

It is not an unprimeable number, because it can be changed into a prime (25403311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6345 + ... + 9542.

It is an arithmetic number, because the mean of its divisors is an integer number (2335536).

Almost surely, 2^25403313 is an apocalyptic number.

It is an amenable number.

25403313 is a deficient number, since it is larger than the sum of its proper divisors (11965263).

25403313 is a wasteful number, since it uses less digits than its factorization.

25403313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15944.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 25403313 is about 5040.1699376112. The cubic root of 25403313 is about 293.9657857357.

Adding to 25403313 its reverse (31330452), we get a palindrome (56733765).

The spelling of 25403313 in words is "twenty-five million, four hundred three thousand, three hundred thirteen".