725187801 has 32 divisors (see below), whose sum is σ = 1102631040. Its totient is φ = 420263424.

The previous prime is 725187797. The next prime is 725187803. The reversal of 725187801 is 108781527.

It is not a de Polignac number, because 725187801 - 2² = 725187797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 725187801.

It is not an unprimeable number, because it can be changed into a prime (725187803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125365 + ... + 131021.

It is an arithmetic number, because the mean of its divisors is an integer number (34457220).

Almost surely, 2^725187801 is an apocalyptic number.

It is an amenable number.

725187801 is a deficient number, since it is larger than the sum of its proper divisors (377443239).

725187801 is a wasteful number, since it uses less digits than its factorization.

725187801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5865.

The product of its (nonzero) digits is 31360, while the sum is 39.

The square root of 725187801 is about 26929.3111868833. The cubic root of 725187801 is about 898.4284512405.

The spelling of 725187801 in words is "seven hundred twenty-five million, one hundred eighty-seven thousand, eight hundred one".