33540425 has 6 divisors (see below), whose sum is σ = 41590158. Its totient is φ = 26832320.

The previous prime is 33540421. The next prime is 33540427. The reversal of 33540425 is 52404533.

It can be written as a sum of positive squares in 3 ways, for example, as 2493241 + 31047184 = 1579^2 + 5572^2 .

It is not a de Polignac number, because 33540425 - 2² = 33540421 is a prime.

It is a super-2 number, since 2×33540425² = 2249920218361250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33540394 and 33540403.

It is not an unprimeable number, because it can be changed into a prime (33540421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 670784 + ... + 670833.

It is an arithmetic number, because the mean of its divisors is an integer number (6931693).

Almost surely, 2^33540425 is an apocalyptic number.

It is an amenable number.

33540425 is a deficient number, since it is larger than the sum of its proper divisors (8049733).

33540425 is a wasteful number, since it uses less digits than its factorization.

33540425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341627 (or 1341622 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 33540425 is about 5791.4095866205. The cubic root of 33540425 is about 322.4949020687.

Adding to 33540425 its reverse (52404533), we get a palindrome (85944958).

The spelling of 33540425 in words is "thirty-three million, five hundred forty thousand, four hundred twenty-five".