139071425 has 24 divisors (see below), whose sum is σ = 178893312. Its totient is φ = 107136000.

The previous prime is 139071391. The next prime is 139071461. The reversal of 139071425 is 524170931.

It is not a de Polignac number, because 139071425 - 2¹⁴ = 139055041 is a prime.

It is a super-2 number, since 2×139071425² = 38681722503061250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139071391 and 139071400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240737 + ... + 241313.

It is an arithmetic number, because the mean of its divisors is an integer number (7453888).

Almost surely, 2^139071425 is an apocalyptic number.

It is an amenable number.

139071425 is a deficient number, since it is larger than the sum of its proper divisors (39821887).

139071425 is a wasteful number, since it uses less digits than its factorization.

139071425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 139071425 is about 11792.8548282424. The cubic root of 139071425 is about 518.0988578634.

The spelling of 139071425 in words is "one hundred thirty-nine million, seventy-one thousand, four hundred twenty-five".