25215441 has 16 divisors (see below), whose sum is σ = 34461504. Its totient is φ = 16395264.

The previous prime is 25215401. The next prime is 25215473. The reversal of 25215441 is 14451252.

It is not a de Polignac number, because 25215441 - 2⁷ = 25215313 is a prime.

It is a super-3 number, since 3×25215441³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25215401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20650 + ... + 21836.

It is an arithmetic number, because the mean of its divisors is an integer number (2153844).

Almost surely, 2^25215441 is an apocalyptic number.

It is an amenable number.

25215441 is a deficient number, since it is larger than the sum of its proper divisors (9246063).

25215441 is a wasteful number, since it uses less digits than its factorization.

25215441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360.

The product of its digits is 1600, while the sum is 24.

The square root of 25215441 is about 5021.4978840979. The cubic root of 25215441 is about 293.2393102870.

Adding to 25215441 its reverse (14451252), we get a palindrome (39666693).

The spelling of 25215441 in words is "twenty-five million, two hundred fifteen thousand, four hundred forty-one".