25081403 has 4 divisors (see below), whose sum is σ = 25095528. Its totient is φ = 25067280.

The previous prime is 25081393. The next prime is 25081411. The reversal of 25081403 is 30418052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25081403 - 2¹⁶ = 25015867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25081493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3938 + ... + 8103.

It is an arithmetic number, because the mean of its divisors is an integer number (6273882).

Almost surely, 2^25081403 is an apocalyptic number.

25081403 is a deficient number, since it is larger than the sum of its proper divisors (14125).

25081403 is a wasteful number, since it uses less digits than its factorization.

25081403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14124.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 25081403 is about 5008.1336843179. The cubic root of 25081403 is about 292.7187950714.

Adding to 25081403 its reverse (30418052), we get a palindrome (55499455).

The spelling of 25081403 in words is "twenty-five million, eighty-one thousand, four hundred three".