25234412515 has 8 divisors (see below), whose sum is σ = 32610625488. Its totient is φ = 18634643040.

The previous prime is 25234412479. The next prime is 25234412527. The reversal of 25234412515 is 51521443252.

It is a happy number.

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

It is not a de Polignac number, because 25234412515 - 2⁷ = 25234412387 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194110801 + ... + 194110930.

It is an arithmetic number, because the mean of its divisors is an integer number (4076328186).

Almost surely, 2^25234412515 is an apocalyptic number.

25234412515 is a deficient number, since it is larger than the sum of its proper divisors (7376212973).

25234412515 is a wasteful number, since it uses less digits than its factorization.

25234412515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388221749.

The product of its digits is 48000, while the sum is 34.

Adding to 25234412515 its reverse (51521443252), we get a palindrome (76755855767).

The spelling of 25234412515 in words is "twenty-five billion, two hundred thirty-four million, four hundred twelve thousand, five hundred fifteen".