25138939283287 has 8 divisors (see below), whose sum is σ = 26617757166000. Its totient is φ = 23660127705984.

The previous prime is 25138939283191. The next prime is 25138939283309. The reversal of 25138939283287 is 78238293983152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25138939283287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25138939284287) 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, 8456389 + ... + 11035777.

It is an arithmetic number, because the mean of its divisors is an integer number (3327219645750).

Almost surely, 2^{25138939283287} is an apocalyptic number.

25138939283287 is a deficient number, since it is larger than the sum of its proper divisors (1478817882713).

25138939283287 is a wasteful number, since it uses less digits than its factorization.

25138939283287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152705.

The product of its digits is 313528320, while the sum is 70.

The spelling of 25138939283287 in words is "twenty-five trillion, one hundred thirty-eight billion, nine hundred thirty-nine million, two hundred eighty-three thousand, two hundred eighty-seven".