139590409925 has 12 divisors (see below), whose sum is σ = 173106856836. Its totient is φ = 111662812800.

The previous prime is 139590409921. The next prime is 139590409943. The reversal of 139590409925 is 529904095931.

It is a happy number.

It is a Cunningham number, because it is equal to 373618²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 10944088996 + 128646320929 = 104614^2 + 358673^2 .

It is not a de Polignac number, because 139590409925 - 2² = 139590409921 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 (139590409921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69167 + ... + 532883.

It is an arithmetic number, because the mean of its divisors is an integer number (14425571403).

Almost surely, 2^139590409925 is an apocalyptic number.

It is an amenable number.

139590409925 is a deficient number, since it is larger than the sum of its proper divisors (33516446911).

139590409925 is a wasteful number, since it uses less digits than its factorization.

139590409925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475768 (or 475763 counting only the distinct ones).

The product of its (nonzero) digits is 3936600, while the sum is 56.

The spelling of 139590409925 in words is "one hundred thirty-nine billion, five hundred ninety million, four hundred nine thousand, nine hundred twenty-five".