139520925625 has 45 divisors (see below), whose sum is σ = 177783576201. Its totient is φ = 109457766000.

The previous prime is 139520925601. The next prime is 139520925631. The reversal of 139520925625 is 526529025931.

The square root of 139520925625 is 373525.

It is a perfect power (a square), and thus also a powerful number.

139520925625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10938440569 + 128582485056 = 104587^2 + 358584^2 .

It is not a de Polignac number, because 139520925625 - 2¹⁵ = 139520892857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 625654264 + ... + 625654486.

Almost surely, 2^139520925625 is an apocalyptic number.

139520925625 is the 373525-th square number.

139520925625 is the 186763-rd centered octagonal number.

It is an amenable number.

139520925625 is a deficient number, since it is larger than the sum of its proper divisors (38262650576).

139520925625 is an frugal number, since it uses more digits than its factorization.

139520925625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 49.

Multiplying 139520925625 by its sum of digits (49), we get a square (6836525355625 = 2614675²).

The spelling of 139520925625 in words is "one hundred thirty-nine billion, five hundred twenty million, nine hundred twenty-five thousand, six hundred twenty-five".