25405003 has 4 divisors (see below), whose sum is σ = 27359248. Its totient is φ = 23450760.

The previous prime is 25404997. The next prime is 25405013. The reversal of 25405003 is 30050452.

It is a happy number.

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 25405003 - 2⁵ = 25404971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25405013) 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, 977103 + ... + 977128.

It is an arithmetic number, because the mean of its divisors is an integer number (6839812).

Almost surely, 2^25405003 is an apocalyptic number.

25405003 is a deficient number, since it is larger than the sum of its proper divisors (1954245).

25405003 is a wasteful number, since it uses less digits than its factorization.

25405003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954244.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 25405003 is about 5040.3375879002. The cubic root of 25405003 is about 293.9723044545.

Adding to 25405003 its reverse (30050452), we get a palindrome (55455455).

The spelling of 25405003 in words is "twenty-five million, four hundred five thousand, three".