725434857403 has 4 divisors (see below), whose sum is σ = 725649931888. Its totient is φ = 725219782920.

The previous prime is 725434857319. The next prime is 725434857419. The reversal of 725434857403 is 304758434527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304758434527 = 2333 ⋅130629419.

It is a cyclic number.

It is not a de Polignac number, because 725434857403 - 2¹³ = 725434849211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725434857443) 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, 107532183 + ... + 107538928.

It is an arithmetic number, because the mean of its divisors is an integer number (181412482972).

Almost surely, 2^725434857403 is an apocalyptic number.

725434857403 is a deficient number, since it is larger than the sum of its proper divisors (215074485).

725434857403 is a wasteful number, since it uses less digits than its factorization.

725434857403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215074484.

The product of its (nonzero) digits is 11289600, while the sum is 52.

The spelling of 725434857403 in words is "seven hundred twenty-five billion, four hundred thirty-four million, eight hundred fifty-seven thousand, four hundred three".