25430515 has 8 divisors (see below), whose sum is σ = 33290928. Its totient is φ = 18494880.

The previous prime is 25430497. The next prime is 25430519. The reversal of 25430515 is 51503452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25430515 - 2¹⁹ = 24906227 is a prime.

It is a super-2 number, since 2×25430515² = 1293422186330450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25430515.

It is not an unprimeable number, because it can be changed into a prime (25430519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231132 + ... + 231241.

It is an arithmetic number, because the mean of its divisors is an integer number (4161366).

Almost surely, 2^25430515 is an apocalyptic number.

25430515 is a deficient number, since it is larger than the sum of its proper divisors (7860413).

25430515 is a wasteful number, since it uses less digits than its factorization.

25430515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462389.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 25430515 is about 5042.8677357234. The cubic root of 25430515 is about 294.0706750046.

Adding to 25430515 its reverse (51503452), we get a palindrome (76933967).

The spelling of 25430515 in words is "twenty-five million, four hundred thirty thousand, five hundred fifteen".