65198725 has 12 divisors (see below), whose sum is σ = 81100960. Its totient is φ = 51994800.

The previous prime is 65198719. The next prime is 65198743. The reversal of 65198725 is 52789156.

It is a de Polignac number, because none of the positive numbers 2^k-65198725 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 4336 + ... + 12214.

Almost surely, 2^65198725 is an apocalyptic number.

It is an amenable number.

65198725 is a deficient number, since it is larger than the sum of its proper divisors (15902235).

65198725 is a wasteful number, since it uses less digits than its factorization.

65198725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8220 (or 8215 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The square root of 65198725 is about 8074.5727441147. The cubic root of 65198725 is about 402.4819121792.

The spelling of 65198725 in words is "sixty-five million, one hundred ninety-eight thousand, seven hundred twenty-five".