33725130 has 64 divisors (see below), whose sum is σ = 86807808. Its totient is φ = 8363520.

The previous prime is 33725123. The next prime is 33725143. The reversal of 33725130 is 3152733.

It is a super-2 number, since 2×33725130² = 2274768787033800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 33725130.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24870 + ... + 26190.

It is an arithmetic number, because the mean of its divisors is an integer number (1356372).

Almost surely, 2^33725130 is an apocalyptic number.

33725130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 33725130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43403904).

33725130 is an abundant number, since it is smaller than the sum of its proper divisors (53082678).

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

33725130 is a wasteful number, since it uses less digits than its factorization.

33725130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391.

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 33725130 is about 5807.3341560479. The cubic root of 33725130 is about 323.0858050497.

Adding to 33725130 its reverse (3152733), we get a palindrome (36877863).

The spelling of 33725130 in words is "thirty-three million, seven hundred twenty-five thousand, one hundred thirty".