25215430 has 16 divisors (see below), whose sum is σ = 45830304. Its totient is φ = 9987840.

The previous prime is 25215401. The next prime is 25215473. The reversal of 25215430 is 3451252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11211 + ... + 13270.

It is an arithmetic number, because the mean of its divisors is an integer number (2864394).

Almost surely, 2^25215430 is an apocalyptic number.

25215430 is a deficient number, since it is larger than the sum of its proper divisors (20614874).

25215430 is a wasteful number, since it uses less digits than its factorization.

25215430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24591.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 25215430 is about 5021.4967888071. The cubic root of 25215430 is about 293.2392676460.

Adding to 25215430 its reverse (3451252), we get a palindrome (28666682).

The spelling of 25215430 in words is "twenty-five million, two hundred fifteen thousand, four hundred thirty".