670500025 has 48 divisors (see below), whose sum is σ = 983687040. Its totient is φ = 448588800.

The previous prime is 670500007. The next prime is 670500059. The reversal of 670500025 is 520005076.

It is a happy number.

It is not a de Polignac number, because 670500025 - 2⁵ = 670499993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 139665 + ... + 144385.

It is an arithmetic number, because the mean of its divisors is an integer number (20493480).

Almost surely, 2^670500025 is an apocalyptic number.

670500025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

670500025 is a deficient number, since it is larger than the sum of its proper divisors (313187015).

670500025 is a wasteful number, since it uses less digits than its factorization.

670500025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4786 (or 4781 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 670500025 is about 25894.0152351851. The cubic root of 670500025 is about 875.2516391894.

The spelling of 670500025 in words is "six hundred seventy million, five hundred thousand, twenty-five".