139669615525 has 12 divisors (see below), whose sum is σ = 188934898464. Its totient is φ = 101577902000.

The previous prime is 139669615513. The next prime is 139669615559. The reversal of 139669615525 is 525516966931.

It is not a de Polignac number, because 139669615525 - 2²¹ = 139667518373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139669615525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253944481 + ... + 253945030.

It is an arithmetic number, because the mean of its divisors is an integer number (15744574872).

Almost surely, 2^139669615525 is an apocalyptic number.

It is an amenable number.

139669615525 is a deficient number, since it is larger than the sum of its proper divisors (49265282939).

139669615525 is a wasteful number, since it uses less digits than its factorization.

139669615525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507889532 (or 507889527 counting only the distinct ones).

The product of its digits is 13122000, while the sum is 58.

The spelling of 139669615525 in words is "one hundred thirty-nine billion, six hundred sixty-nine million, six hundred fifteen thousand, five hundred twenty-five".