101161825 has 6 divisors (see below), whose sum is σ = 125440694. Its totient is φ = 80929440.

The previous prime is 101161807. The next prime is 101161847. The reversal of 101161825 is 528161101.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3389281 + 97772544 = 1841^2 + 9888^2 .

It is a de Polignac number, because none of the positive numbers 2^k-101161825 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 4046473 = 101161825 / (1 + 0 + 1 + 1 + 6 + 1 + 8 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101161825.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2023212 + ... + 2023261.

Almost surely, 2^101161825 is an apocalyptic number.

It is an amenable number.

101161825 is a deficient number, since it is larger than the sum of its proper divisors (24278869).

101161825 is an equidigital number, since it uses as much as digits as its factorization.

101161825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4046483 (or 4046478 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 101161825 is about 10057.9234934454. The cubic root of 101161825 is about 465.9495377213.

The spelling of 101161825 in words is "one hundred one million, one hundred sixty-one thousand, eight hundred twenty-five".