101405725 has 6 divisors (see below), whose sum is σ = 125743130. Its totient is φ = 81124560.

The previous prime is 101405701. The next prime is 101405741. The reversal of 101405725 is 527504101.

It can be written as a sum of positive squares in 3 ways, for example, as 30492484 + 70913241 = 5522^2 + 8421^2 .

It is not a de Polignac number, because 101405725 - 2¹⁷ = 101274653 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: 4056229 = 101405725 / (1 + 0 + 1 + 4 + 0 + 5 + 7 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 101405725.

It is a congruent 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, 2028090 + ... + 2028139.

Almost surely, 2^101405725 is an apocalyptic number.

It is an amenable number.

101405725 is a deficient number, since it is larger than the sum of its proper divisors (24337405).

101405725 is an equidigital number, since it uses as much as digits as its factorization.

101405725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056239 (or 4056234 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 101405725 is about 10070.0409631739. The cubic root of 101405725 is about 466.3237035098.

Adding to 101405725 its reverse (527504101), we get a palindrome (628909826).

The spelling of 101405725 in words is "one hundred one million, four hundred five thousand, seven hundred twenty-five".