139799025 has 36 divisors (see below), whose sum is σ = 254663760. Its totient is φ = 73288800.

The previous prime is 139799021. The next prime is 139799029. The reversal of 139799025 is 520997931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (139799021) and next prime (139799029).

It is not a de Polignac number, because 139799025 - 2² = 139799021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (139799021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8010 + ... + 18540.

Almost surely, 2^139799025 is an apocalyptic number.

139799025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139799025 is a deficient number, since it is larger than the sum of its proper divisors (114864735).

139799025 is a wasteful number, since it uses less digits than its factorization.

139799025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10606 (or 10598 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 139799025 is about 11823.6637722831. The cubic root of 139799025 is about 519.0008241715. Note that the first 3 decimals are identical.

The spelling of 139799025 in words is "one hundred thirty-nine million, seven hundred ninety-nine thousand, twenty-five".