101631625 has 16 divisors (see below), whose sum is σ = 129542400. Its totient is φ = 79570800.

The previous prime is 101631619. The next prime is 101631659. The reversal of 101631625 is 526136101.

It is not a de Polignac number, because 101631625 - 2³ = 101631617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 101631625.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2775 + ... + 14524.

It is an arithmetic number, because the mean of its divisors is an integer number (8096400).

Almost surely, 2^101631625 is an apocalyptic number.

It is an amenable number.

101631625 is a deficient number, since it is larger than the sum of its proper divisors (27910775).

101631625 is an equidigital number, since it uses as much as digits as its factorization.

101631625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17361 (or 17351 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 101631625 is about 10081.2511624302. The cubic root of 101631625 is about 466.6697207850.

Adding to 101631625 its reverse (526136101), we get a palindrome (627767726).

The spelling of 101631625 in words is "one hundred one million, six hundred thirty-one thousand, six hundred twenty-five".