725344101 has 6 divisors (see below), whose sum is σ = 1047719270. Its totient is φ = 483562728.

The previous prime is 725344099. The next prime is 725344111. The reversal of 725344101 is 101443527.

It can be written as a sum of positive squares in only one way, i.e., 569967876 + 155376225 = 23874^2 + 12465^2 .

It is not a de Polignac number, because 725344101 - 2¹ = 725344099 is a prime.

It is a super-2 number, since 2×725344101² = 1052248129710996402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725344111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40296886 + ... + 40296903.

Almost surely, 2^725344101 is an apocalyptic number.

It is an amenable number.

725344101 is a deficient number, since it is larger than the sum of its proper divisors (322375169).

725344101 is a wasteful number, since it uses less digits than its factorization.

725344101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80593795 (or 80593792 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 725344101 is about 26932.2130728241. The cubic root of 725344101 is about 898.4929928114.

Adding to 725344101 its reverse (101443527), we get a palindrome (826787628).

The spelling of 725344101 in words is "seven hundred twenty-five million, three hundred forty-four thousand, one hundred one".