25139128763 has 8 divisors (see below), whose sum is σ = 28739524320. Its totient is φ = 21541006080.

The previous prime is 25139128717. The next prime is 25139128787. The reversal of 25139128763 is 36782193152.

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

It is a cyclic number.

It is not a de Polignac number, because 25139128763 - 2⁸ = 25139128507 is a prime.

It is a super-3 number, since 3×25139128763³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25139128463) 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, 544448 + ... + 588813.

It is an arithmetic number, because the mean of its divisors is an integer number (3592440540).

Almost surely, 2^25139128763 is an apocalyptic number.

25139128763 is a deficient number, since it is larger than the sum of its proper divisors (3600395557).

25139128763 is a wasteful number, since it uses less digits than its factorization.

25139128763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136437.

The product of its digits is 544320, while the sum is 47.

The spelling of 25139128763 in words is "twenty-five billion, one hundred thirty-nine million, one hundred twenty-eight thousand, seven hundred sixty-three".