667536025 has 48 divisors (see below), whose sum is σ = 993686400. Its totient is φ = 439464960.

The previous prime is 667536011. The next prime is 667536041. The reversal of 667536025 is 520635766.

It is not a de Polignac number, because 667536025 - 2⁹ = 667535513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101796 + ... + 108154.

It is an arithmetic number, because the mean of its divisors is an integer number (20701800).

Almost surely, 2^667536025 is an apocalyptic number.

667536025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

667536025 is a deficient number, since it is larger than the sum of its proper divisors (326150375).

667536025 is a wasteful number, since it uses less digits than its factorization.

667536025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6418 (or 6413 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 40.

The square root of 667536025 is about 25836.7185416415. The cubic root of 667536025 is about 873.9600270247.

The spelling of 667536025 in words is "six hundred sixty-seven million, five hundred thirty-six thousand, twenty-five".