65625198 has 32 divisors (see below), whose sum is σ = 135297024. Its totient is φ = 21205152.

The previous prime is 65625193. The next prime is 65625199. The reversal of 65625198 is 89152656.

It is a super-2 number, since 2×65625198² = 8613333225078408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65625193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107811 + ... + 108417.

It is an arithmetic number, because the mean of its divisors is an integer number (4228032).

Almost surely, 2^65625198 is an apocalyptic number.

65625198 is an abundant number, since it is smaller than the sum of its proper divisors (69671826).

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

65625198 is a wasteful number, since it uses less digits than its factorization.

65625198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136.

The product of its digits is 129600, while the sum is 42.

The square root of 65625198 is about 8100.9380938259. The cubic root of 65625198 is about 403.3575671678.

The spelling of 65625198 in words is "sixty-five million, six hundred twenty-five thousand, one hundred ninety-eight".