101399825 has 6 divisors (see below), whose sum is σ = 125735814. Its totient is φ = 81119840.

The previous prime is 101399803. The next prime is 101399833. The reversal of 101399825 is 528993101.

It can be written as a sum of positive squares in 3 ways, for example, as 5202961 + 96196864 = 2281^2 + 9808^2 .

It is not a de Polignac number, because 101399825 - 2⁶ = 101399761 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2027972 + ... + 2028021.

It is an arithmetic number, because the mean of its divisors is an integer number (20955969).

Almost surely, 2^101399825 is an apocalyptic number.

It is an amenable number.

101399825 is a deficient number, since it is larger than the sum of its proper divisors (24335989).

101399825 is an equidigital number, since it uses as much as digits as its factorization.

101399825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056003 (or 4055998 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 101399825 is about 10069.7480107498. The cubic root of 101399825 is about 466.3146594339.

The spelling of 101399825 in words is "one hundred one million, three hundred ninety-nine thousand, eight hundred twenty-five".