66025542 has 32 divisors (see below), whose sum is σ = 144877824. Its totient is φ = 19893600.

The previous prime is 66025537. The next prime is 66025577. The reversal of 66025542 is 24552066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9183 + ... + 14709.

It is an arithmetic number, because the mean of its divisors is an integer number (4527432).

Almost surely, 2^66025542 is an apocalyptic number.

66025542 is an abundant number, since it is smaller than the sum of its proper divisors (78852282).

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

66025542 is a wasteful number, since it uses less digits than its factorization.

66025542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5724.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 66025542 is about 8125.6102540055. The cubic root of 66025542 is about 404.1761273349.

The spelling of 66025542 in words is "sixty-six million, twenty-five thousand, five hundred forty-two".