725156545 has 16 divisors (see below), whose sum is σ = 892362240. Its totient is φ = 565372800.

The previous prime is 725156503. The next prime is 725156569. The reversal of 725156545 is 545651527.

It is not a de Polignac number, because 725156545 - 2⁷ = 725156417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 725156498 and 725156507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359590 + ... + 361600.

It is an arithmetic number, because the mean of its divisors is an integer number (55772640).

Almost surely, 2^725156545 is an apocalyptic number.

It is an amenable number.

725156545 is a deficient number, since it is larger than the sum of its proper divisors (167205695).

725156545 is a wasteful number, since it uses less digits than its factorization.

725156545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816.

The product of its digits is 210000, while the sum is 40.

The square root of 725156545 is about 26928.7308464398. The cubic root of 725156545 is about 898.4155434654.

The spelling of 725156545 in words is "seven hundred twenty-five million, one hundred fifty-six thousand, five hundred forty-five".