195625551 has 8 divisors (see below), whose sum is σ = 284546304. Its totient is φ = 118560920.

The previous prime is 195625541. The next prime is 195625553. The reversal of 195625551 is 155526591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195625551 - 2¹⁸ = 195363407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195625553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2963991 + ... + 2964056.

It is an arithmetic number, because the mean of its divisors is an integer number (35568288).

Almost surely, 2^195625551 is an apocalyptic number.

195625551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

195625551 is a deficient number, since it is larger than the sum of its proper divisors (88920753).

195625551 is a wasteful number, since it uses less digits than its factorization.

195625551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5928061.

The product of its digits is 67500, while the sum is 39.

The square root of 195625551 is about 13986.6204281091. The cubic root of 195625551 is about 580.5084235910.

The spelling of 195625551 in words is "one hundred ninety-five million, six hundred twenty-five thousand, five hundred fifty-one".