101663425 has 6 divisors (see below), whose sum is σ = 126062678. Its totient is φ = 81330720.

The previous prime is 101663413. The next prime is 101663447. The reversal of 101663425 is 524366101.

It can be written as a sum of positive squares in 3 ways, for example, as 36864 + 101626561 = 192^2 + 10081^2 .

It is not a de Polignac number, because 101663425 - 2¹⁵ = 101630657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101663393 and 101663402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2033244 + ... + 2033293.

Almost surely, 2^101663425 is an apocalyptic number.

It is an amenable number.

101663425 is a deficient number, since it is larger than the sum of its proper divisors (24399253).

101663425 is an equidigital number, since it uses as much as digits as its factorization.

101663425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066547 (or 4066542 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 101663425 is about 10082.8282242633. The cubic root of 101663425 is about 466.7183885417.

The spelling of 101663425 in words is "one hundred one million, six hundred sixty-three thousand, four hundred twenty-five".