67813425 has 36 divisors (see below), whose sum is σ = 128613420. Its totient is φ = 34037760.

The previous prime is 67813409. The next prime is 67813439. The reversal of 67813425 is 52431876.

67813425 = 1140² + 1141² + ... + 1189².

It can be written as a sum of positive squares in 6 ways, for example, as 589824 + 67223601 = 768^2 + 8199^2 .

It is not a de Polignac number, because 67813425 - 2⁴ = 67813409 is a prime.

It is a super-2 number, since 2×67813425² = 9197321220461250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67813425.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5040 + ... + 12689.

It is an arithmetic number, because the mean of its divisors is an integer number (3572595).

Almost surely, 2^67813425 is an apocalyptic number.

It is an amenable number.

67813425 is a deficient number, since it is larger than the sum of its proper divisors (60799995).

67813425 is a wasteful number, since it uses less digits than its factorization.

67813425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17762 (or 17754 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 67813425 is about 8234.8907096573. The cubic root of 67813425 is about 407.7918668823.

The spelling of 67813425 in words is "sixty-seven million, eight hundred thirteen thousand, four hundred twenty-five".