33870725 has 24 divisors (see below), whose sum is σ = 49306368. Its totient is φ = 22593600.

The previous prime is 33870701. The next prime is 33870757. The reversal of 33870725 is 52707833.

It is not a de Polignac number, because 33870725 - 2¹⁸ = 33608581 is a prime.

It is a super-2 number, since 2×33870725² = 2294452024051250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3860 + ... + 9090.

It is an arithmetic number, because the mean of its divisors is an integer number (2054432).

Almost surely, 2^33870725 is an apocalyptic number.

33870725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33870725 is a deficient number, since it is larger than the sum of its proper divisors (15435643).

33870725 is a wasteful number, since it uses less digits than its factorization.

33870725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5285 (or 5280 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 33870725 is about 5819.8560978773. The cubic root of 33870725 is about 323.5500696095.

The spelling of 33870725 in words is "thirty-three million, eight hundred seventy thousand, seven hundred twenty-five".