34139725 has 12 divisors (see below), whose sum is σ = 42408000. Its totient is φ = 27263600.

The previous prime is 34139683. The next prime is 34139731. The reversal of 34139725 is 52793143.

It is not a de Polignac number, because 34139725 - 2¹³ = 34131533 is a prime.

It is a congruent number.

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, 22026 + ... + 23524.

It is an arithmetic number, because the mean of its divisors is an integer number (3534000).

Almost surely, 2^34139725 is an apocalyptic number.

It is an amenable number.

34139725 is a deficient number, since it is larger than the sum of its proper divisors (8268275).

34139725 is a wasteful number, since it uses less digits than its factorization.

34139725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420 (or 2415 counting only the distinct ones).

The product of its digits is 22680, while the sum is 34.

The square root of 34139725 is about 5842.9209304936. The cubic root of 34139725 is about 324.4043527751.

The spelling of 34139725 in words is "thirty-four million, one hundred thirty-nine thousand, seven hundred twenty-five".