139757825 has 12 divisors (see below), whose sum is σ = 182421360. Its totient is φ = 105921360.

The previous prime is 139757803. The next prime is 139757851. The reversal of 139757825 is 528757931.

It is a de Polignac number, because none of the positive numbers 2^k-139757825 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139757825.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146639 + ... + 147588.

It is an arithmetic number, because the mean of its divisors is an integer number (15201780).

Almost surely, 2^139757825 is an apocalyptic number.

It is an amenable number.

139757825 is a deficient number, since it is larger than the sum of its proper divisors (42663535).

139757825 is a wasteful number, since it uses less digits than its factorization.

139757825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294256 (or 294251 counting only the distinct ones).

The product of its digits is 529200, while the sum is 47.

The square root of 139757825 is about 11821.9213751403. The cubic root of 139757825 is about 518.9498344623.

The spelling of 139757825 in words is "one hundred thirty-nine million, seven hundred fifty-seven thousand, eight hundred twenty-five".