25936406501238 has 40 divisors (see below), whose sum is σ = 59534244748440. Its totient is φ = 8434603738080.

The previous prime is 25936406501141. The next prime is 25936406501261. The reversal of 25936406501238 is 83210560463952.

It is a happy number.

25936406501238 is a `hidden beast` number, since 2 + 5 + 93 + 6 + 40 + 6 + 501 + 2 + 3 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1952447928 + ... + 1952461211.

It is an arithmetic number, because the mean of its divisors is an integer number (1488356118711).

Almost surely, 2^{25936406501238} is an apocalyptic number.

25936406501238 is an abundant number, since it is smaller than the sum of its proper divisors (33597838247202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25936406501238 is a wasteful number, since it uses less digits than its factorization.

25936406501238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904909194 (or 3904909185 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 25936406501238 in words is "twenty-five trillion, nine hundred thirty-six billion, four hundred six million, five hundred one thousand, two hundred thirty-eight".