67425881 has 4 divisors (see below), whose sum is σ = 67576500. Its totient is φ = 67275264.

The previous prime is 67425863. The next prime is 67425887. The reversal of 67425881 is 18852476.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57760000 + 9665881 = 7600^2 + 3109^2 .

It is a cyclic number.

It is not a de Polignac number, because 67425881 - 2⁶ = 67425817 is a prime.

It is a super-2 number, since 2×67425881² = 9092498857252322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67425887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74636 + ... + 75533.

It is an arithmetic number, because the mean of its divisors is an integer number (16894125).

Almost surely, 2^67425881 is an apocalyptic number.

It is an amenable number.

67425881 is a deficient number, since it is larger than the sum of its proper divisors (150619).

67425881 is a wasteful number, since it uses less digits than its factorization.

67425881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150618.

The product of its digits is 107520, while the sum is 41.

The square root of 67425881 is about 8211.3263849393. The cubic root of 67425881 is about 407.0135583383.

The spelling of 67425881 in words is "sixty-seven million, four hundred twenty-five thousand, eight hundred eighty-one".