25001262640015 has 8 divisors (see below), whose sum is σ = 30001547479248. Its totient is φ = 20000988571200.

The previous prime is 25001262639989. The next prime is 25001262640043. The reversal of 25001262640015 is 51004626210052.

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

It is not a de Polignac number, because 25001262640015 - 2⁹ = 25001262639503 is a prime.

It is a Duffinian number.

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, 3866979 + ... + 8059531.

It is an arithmetic number, because the mean of its divisors is an integer number (3750193434906).

Almost surely, 2^{25001262640015} is an apocalyptic number.

25001262640015 is a deficient number, since it is larger than the sum of its proper divisors (5000284839233).

25001262640015 is a wasteful number, since it uses less digits than its factorization.

25001262640015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5385209.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 25001262640015 its reverse (51004626210052), we get a palindrome (76005888850067).

The spelling of 25001262640015 in words is "twenty-five trillion, one billion, two hundred sixty-two million, six hundred forty thousand, fifteen".