67281225390 has 48 divisors (see below), whose sum is σ = 175810284000. Its totient is φ = 17851496256.

The previous prime is 67281225383. The next prime is 67281225419. The reversal of 67281225390 is 9352218276.

67281225390 is a `hidden beast` number, since 67 + 281 + 225 + 3 + 90 = 666.

67281225390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 1860405 + ... + 1896224.

It is an arithmetic number, because the mean of its divisors is an integer number (3662714250).

Almost surely, 2^67281225390 is an apocalyptic number.

67281225390 is an abundant number, since it is smaller than the sum of its proper divisors (108529058610).

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

67281225390 is a wasteful number, since it uses less digits than its factorization.

67281225390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756841 (or 3756838 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 67281225390 in words is "sixty-seven billion, two hundred eighty-one million, two hundred twenty-five thousand, three hundred ninety".