25125021320015 has 8 divisors (see below), whose sum is σ = 31460896261728. Its totient is φ = 19226103270880.

The previous prime is 25125021319999. The next prime is 25125021320017. The reversal of 25125021320015 is 51002312052152.

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 25125021320015 - 2⁴ = 25125021319999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25125021320015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25125021320017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109239223016 + ... + 109239223245.

It is an arithmetic number, because the mean of its divisors is an integer number (3932612032716).

Almost surely, 2^{25125021320015} is an apocalyptic number.

25125021320015 is a deficient number, since it is larger than the sum of its proper divisors (6335874941713).

25125021320015 is a wasteful number, since it uses less digits than its factorization.

25125021320015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218478446289.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 25125021320015 its reverse (51002312052152), we get a palindrome (76127333372167).

The spelling of 25125021320015 in words is "twenty-five trillion, one hundred twenty-five billion, twenty-one million, three hundred twenty thousand, fifteen".