34509825 has 36 divisors (see below), whose sum is σ = 70644288. Its totient is φ = 15775200.

The previous prime is 34509803. The next prime is 34509829. The reversal of 34509825 is 52890543.

It is not a de Polignac number, because 34509825 - 2⁷ = 34509697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 34509825.

It is not an unprimeable number, because it can be changed into a prime (34509829) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9381 + ... + 12530.

Almost surely, 2^34509825 is an apocalyptic number.

34509825 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

34509825 is an abundant number, since it is smaller than the sum of its proper divisors (36134463).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

34509825 is a wasteful number, since it uses less digits than its factorization.

34509825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21934 (or 21926 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 34509825 is about 5874.5063622401. The cubic root of 34509825 is about 325.5724034961.

The spelling of 34509825 in words is "thirty-four million, five hundred nine thousand, eight hundred twenty-five".