725772135 has 32 divisors (see below), whose sum is σ = 1268047872. Its totient is φ = 351543680.

The previous prime is 725772101. The next prime is 725772149. The reversal of 725772135 is 531277527.

It is not a de Polignac number, because 725772135 - 2⁶ = 725772071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 725772093 and 725772102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268762 + ... + 271448.

It is an arithmetic number, because the mean of its divisors is an integer number (39626496).

Almost surely, 2^725772135 is an apocalyptic number.

725772135 is a deficient number, since it is larger than the sum of its proper divisors (542275737).

725772135 is a wasteful number, since it uses less digits than its factorization.

725772135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4343.

The product of its digits is 102900, while the sum is 39.

The square root of 725772135 is about 26940.1584071067. The cubic root of 725772135 is about 898.6696951170.

The spelling of 725772135 in words is "seven hundred twenty-five million, seven hundred seventy-two thousand, one hundred thirty-five".