139293025 has 6 divisors (see below), whose sum is σ = 172723382. Its totient is φ = 111434400.

The previous prime is 139292981. The next prime is 139293029. The reversal of 139293025 is 520392931.

It can be written as a sum of positive squares in 3 ways, for example, as 19324816 + 119968209 = 4396^2 + 10953^2 .

It is not a de Polignac number, because 139293025 - 2⁷ = 139292897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139293029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2785836 + ... + 2785885.

Almost surely, 2^139293025 is an apocalyptic number.

It is an amenable number.

139293025 is a deficient number, since it is larger than the sum of its proper divisors (33430357).

139293025 is an equidigital number, since it uses as much as digits as its factorization.

139293025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5571731 (or 5571726 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 139293025 is about 11802.2466081674. The cubic root of 139293025 is about 518.3738958640.

The spelling of 139293025 in words is "one hundred thirty-nine million, two hundred ninety-three thousand, twenty-five".