139718325 has 24 divisors (see below), whose sum is σ = 244591488. Its totient is φ = 70132480.

The previous prime is 139718321. The next prime is 139718329. The reversal of 139718325 is 523817931.

It is an interprime number because it is at equal distance from previous prime (139718321) and next prime (139718329).

It is not a de Polignac number, because 139718325 - 2² = 139718321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139718321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53517 + ... + 56066.

It is an arithmetic number, because the mean of its divisors is an integer number (10191312).

Almost surely, 2^139718325 is an apocalyptic number.

139718325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139718325 is a deficient number, since it is larger than the sum of its proper divisors (104873163).

139718325 is a wasteful number, since it uses less digits than its factorization.

139718325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109613 (or 109608 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 139718325 is about 11820.2506318606. The cubic root of 139718325 is about 518.9009392873.

The spelling of 139718325 in words is "one hundred thirty-nine million, seven hundred eighteen thousand, three hundred twenty-five".