725512101 has 16 divisors (see below), whose sum is σ = 986752320. Its totient is φ = 474030720.

The previous prime is 725512087. The next prime is 725512103. The reversal of 725512101 is 101215527.

It is not a de Polignac number, because 725512101 - 2⁷ = 725511973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725512103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44785 + ... + 58793.

It is an arithmetic number, because the mean of its divisors is an integer number (61672020).

Almost surely, 2^725512101 is an apocalyptic number.

It is an amenable number.

725512101 is a deficient number, since it is larger than the sum of its proper divisors (261240219).

725512101 is a wasteful number, since it uses less digits than its factorization.

725512101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14356.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 725512101 is about 26935.3318338572. The cubic root of 725512101 is about 898.5623553711.

Adding to 725512101 its reverse (101215527), we get a palindrome (826727628).

The spelling of 725512101 in words is "seven hundred twenty-five million, five hundred twelve thousand, one hundred one".