725023667663237 has 4 divisors (see below), whose sum is σ = 725036917177356. Its totient is φ = 725010418149120.

The previous prime is 725023667663177. The next prime is 725023667663261. The reversal of 725023667663237 is 732366766320527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 656466079100836 + 68557588562401 = 25621594^2 + 8279951^2 .

It is a cyclic number.

It is not a de Polignac number, because 725023667663237 - 2⁶ = 725023667663173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725023661663237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6624674978 + ... + 6624784419.

It is an arithmetic number, because the mean of its divisors is an integer number (181259229294339).

Almost surely, 2^{725023667663237} is an apocalyptic number.

It is an amenable number.

725023667663237 is a deficient number, since it is larger than the sum of its proper divisors (13249514119).

725023667663237 is a wasteful number, since it uses less digits than its factorization.

725023667663237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13249514118.

The product of its (nonzero) digits is 480090240, while the sum is 65.

The spelling of 725023667663237 in words is "seven hundred twenty-five trillion, twenty-three billion, six hundred sixty-seven million, six hundred sixty-three thousand, two hundred thirty-seven".