25349403 has 32 divisors (see below), whose sum is σ = 36596736. Its totient is φ = 15579648.

The previous prime is 25349399. The next prime is 25349419. The reversal of 25349403 is 30494352.

It is not a de Polignac number, because 25349403 - 2² = 25349399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25349483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224275 + ... + 224387.

It is an arithmetic number, because the mean of its divisors is an integer number (1143648).

Almost surely, 2^25349403 is an apocalyptic number.

25349403 is a deficient number, since it is larger than the sum of its proper divisors (11247333).

25349403 is a wasteful number, since it uses less digits than its factorization.

25349403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 25349403 is about 5034.8190632832. The cubic root of 25349403 is about 293.7576905788.

It can be divided in two parts, 25349 and 403, that added together give a palindrome (25752).

The spelling of 25349403 in words is "twenty-five million, three hundred forty-nine thousand, four hundred three".