25290541 has 4 divisors (see below), whose sum is σ = 25332412. Its totient is φ = 25248672.

The previous prime is 25290491. The next prime is 25290553. The reversal of 25290541 is 14509252.

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 2528100 + 22762441 = 1590^2 + 4771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25290541 is a prime.

It is a super-2 number, since 2×25290541² = 1279222928145362, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25290571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20016 + ... + 21241.

It is an arithmetic number, because the mean of its divisors is an integer number (6333103).

Almost surely, 2^25290541 is an apocalyptic number.

It is an amenable number.

25290541 is a deficient number, since it is larger than the sum of its proper divisors (41871).

25290541 is an equidigital number, since it uses as much as digits as its factorization.

25290541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41870.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 25290541 is about 5028.9701729082. The cubic root of 25290541 is about 293.5301432609.

Adding to 25290541 its reverse (14509252), we get a palindrome (39799793).

The spelling of 25290541 in words is "twenty-five million, two hundred ninety thousand, five hundred forty-one".