25411321 has 4 divisors (see below), whose sum is σ = 27366052. Its totient is φ = 23456592.

The previous prime is 25411313. The next prime is 25411333. The reversal of 25411321 is 12311452.

25411321 = 3564² + 3565².

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

It can be written as a sum of positive squares in 2 ways, for example, as 12709225 + 12702096 = 3565^2 + 3564^2 .

It is a cyclic number.

It is not a de Polignac number, because 25411321 - 2³ = 25411313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25411361) 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, 977346 + ... + 977371.

It is an arithmetic number, because the mean of its divisors is an integer number (6841513).

Almost surely, 2^25411321 is an apocalyptic number.

25411321 is the 3565-th centered square number.

It is an amenable number.

25411321 is a deficient number, since it is larger than the sum of its proper divisors (1954731).

25411321 is a wasteful number, since it uses less digits than its factorization.

25411321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954730.

The product of its digits is 240, while the sum is 19.

The square root of 25411321 is about 5040.9642926726. The cubic root of 25411321 is about 293.9966718737.

Adding to 25411321 its reverse (12311452), we get a palindrome (37722773).

The spelling of 25411321 in words is "twenty-five million, four hundred eleven thousand, three hundred twenty-one".