725430545 has 96 divisors (see below), whose sum is σ = 1152403200. Its totient is φ = 434294784.

The previous prime is 725430529. The next prime is 725430593. The reversal of 725430545 is 545034527.

It is not a de Polignac number, because 725430545 - 2⁴ = 725430529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7042964 + ... + 7043066.

It is an arithmetic number, because the mean of its divisors is an integer number (12004200).

Almost surely, 2^725430545 is an apocalyptic number.

It is an amenable number.

725430545 is a deficient number, since it is larger than the sum of its proper divisors (426972655).

725430545 is a wasteful number, since it uses less digits than its factorization.

725430545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 35.

The square root of 725430545 is about 26933.8178689914. The cubic root of 725430545 is about 898.5286844888.

The spelling of 725430545 in words is "seven hundred twenty-five million, four hundred thirty thousand, five hundred forty-five".