66360525 has 48 divisors (see below), whose sum is σ = 136800768. Its totient is φ = 27576000.

The previous prime is 66360523. The next prime is 66360527. The reversal of 66360525 is 52506366.

It is an interprime number because it is at equal distance from previous prime (66360523) and next prime (66360527).

It is not a de Polignac number, because 66360525 - 2¹ = 66360523 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66360523) 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, 30 + ... + 11520.

It is an arithmetic number, because the mean of its divisors is an integer number (2850016).

Almost surely, 2^66360525 is an apocalyptic number.

It is an amenable number.

66360525 is an abundant number, since it is smaller than the sum of its proper divisors (70440243).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66360525 is a wasteful number, since it uses less digits than its factorization.

66360525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11522 (or 11517 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 66360525 is about 8146.1969654557. The cubic root of 66360525 is about 404.8585087208.

The spelling of 66360525 in words is "sixty-six million, three hundred sixty thousand, five hundred twenty-five".