25270403 has 4 divisors (see below), whose sum is σ = 25280640. Its totient is φ = 25260168.

The previous prime is 25270387. The next prime is 25270411. The reversal of 25270403 is 30407252.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25270403 - 2⁴ = 25270387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25270423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118 + ... + 7196.

It is an arithmetic number, because the mean of its divisors is an integer number (6320160).

Almost surely, 2^25270403 is an apocalyptic number.

25270403 is a deficient number, since it is larger than the sum of its proper divisors (10237).

25270403 is an equidigital number, since it uses as much as digits as its factorization.

25270403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10236.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 25270403 is about 5026.9675749899. The cubic root of 25270403 is about 293.4522132071.

Adding to 25270403 its reverse (30407252), we get a palindrome (55677655).

The spelling of 25270403 in words is "twenty-five million, two hundred seventy thousand, four hundred three".