67425557 has 4 divisors (see below), whose sum is σ = 68530956. Its totient is φ = 66320160.

The previous prime is 67425529. The next prime is 67425559. The reversal of 67425557 is 75552476.

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 28313041 + 39112516 = 5321^2 + 6254^2 .

It is a cyclic number.

It is not a de Polignac number, because 67425557 - 2¹² = 67421461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67425559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552608 + ... + 552729.

It is an arithmetic number, because the mean of its divisors is an integer number (17132739).

Almost surely, 2^67425557 is an apocalyptic number.

It is an amenable number.

67425557 is a deficient number, since it is larger than the sum of its proper divisors (1105399).

67425557 is a wasteful number, since it uses less digits than its factorization.

67425557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105398.

The product of its digits is 294000, while the sum is 41.

The square root of 67425557 is about 8211.3066560688. The cubic root of 67425557 is about 407.0129063997.

The spelling of 67425557 in words is "sixty-seven million, four hundred twenty-five thousand, five hundred fifty-seven".