66922525 has 12 divisors (see below), whose sum is σ = 86592672. Its totient is φ = 51209840.

The previous prime is 66922511. The next prime is 66922547. The reversal of 66922525 is 52522966.

It is a de Polignac number, because none of the positive numbers 2^k-66922525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57619 + ... + 58768.

It is an arithmetic number, because the mean of its divisors is an integer number (7216056).

Almost surely, 2^66922525 is an apocalyptic number.

It is an amenable number.

66922525 is a deficient number, since it is larger than the sum of its proper divisors (19670147).

66922525 is a wasteful number, since it uses less digits than its factorization.

66922525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116420 (or 116415 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 66922525 is about 8180.6188641202. The cubic root of 66922525 is about 405.9981982011.

The spelling of 66922525 in words is "sixty-six million, nine hundred twenty-two thousand, five hundred twenty-five".