67785025 has 48 divisors (see below), whose sum is σ = 109421568. Its totient is φ = 40392000.

The previous prime is 67785023. The next prime is 67785031. The reversal of 67785025 is 52058776.

It is not a de Polignac number, because 67785025 - 2¹ = 67785023 is a prime.

It is a super-2 number, since 2×67785025² = 9189619228501250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67785023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43510 + ... + 45040.

It is an arithmetic number, because the mean of its divisors is an integer number (2279616).

Almost surely, 2^67785025 is an apocalyptic number.

It is an amenable number.

67785025 is a deficient number, since it is larger than the sum of its proper divisors (41636543).

67785025 is a wasteful number, since it uses less digits than its factorization.

67785025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 67785025 is about 8233.1661588966. The cubic root of 67785025 is about 407.7349317148.

The spelling of 67785025 in words is "sixty-seven million, seven hundred eighty-five thousand, twenty-five".