67420525 has 12 divisors (see below), whose sum is σ = 83824372. Its totient is φ = 53792640.

The previous prime is 67420501. The next prime is 67420541. The reversal of 67420525 is 52502476.

It can be written as a sum of positive squares in 6 ways, for example, as 5294601 + 62125924 = 2301^2 + 7882^2 .

It is not a de Polignac number, because 67420525 - 2⁹ = 67420013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6529 + ... + 13321.

Almost surely, 2^67420525 is an apocalyptic number.

It is an amenable number.

67420525 is a deficient number, since it is larger than the sum of its proper divisors (16403847).

67420525 is a wasteful number, since it uses less digits than its factorization.

67420525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7200 (or 7195 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 67420525 is about 8211.0002435757. Note that the first 3 decimals coincide. The cubic root of 67420525 is about 407.0027809617.

The spelling of 67420525 in words is "sixty-seven million, four hundred twenty thousand, five hundred twenty-five".