10161200421225 has 36 divisors (see below), whose sum is σ = 20799815976576. Its totient is φ = 4645120191840.

The previous prime is 10161200421181. The next prime is 10161200421247. The reversal of 10161200421225 is 52212400216101.

It is a happy number.

10161200421225 is a `hidden beast` number, since 1 + 0 + 1 + 6 + 12 + 0 + 0 + 421 + 225 = 666.

It is not a de Polignac number, because 10161200421225 - 2¹² = 10161200417129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3225776337 + ... + 3225779486.

It is an arithmetic number, because the mean of its divisors is an integer number (577772666016).

Almost surely, 2^{10161200421225} is an apocalyptic number.

10161200421225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10161200421225 is an abundant number, since it is smaller than the sum of its proper divisors (10638615555351).

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

10161200421225 is a wasteful number, since it uses less digits than its factorization.

10161200421225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6451555846 (or 6451555838 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 10161200421225 its reverse (52212400216101), we get a palindrome (62373600637326).

The spelling of 10161200421225 in words is "ten trillion, one hundred sixty-one billion, two hundred million, four hundred twenty-one thousand, two hundred twenty-five".