725040342257 has 16 divisors (see below), whose sum is σ = 904394758272. Its totient is φ = 564686277120.

The previous prime is 725040342253. The next prime is 725040342263. The reversal of 725040342257 is 752243040527.

It is not a de Polignac number, because 725040342257 - 2² = 725040342253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725040342251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2178878 + ... + 2489495.

It is an arithmetic number, because the mean of its divisors is an integer number (56524672392).

Almost surely, 2^725040342257 is an apocalyptic number.

725040342257 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

725040342257 is a deficient number, since it is larger than the sum of its proper divisors (179354416015).

725040342257 is a wasteful number, since it uses less digits than its factorization.

725040342257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670408.

The product of its (nonzero) digits is 470400, while the sum is 41.

The spelling of 725040342257 in words is "seven hundred twenty-five billion, forty million, three hundred forty-two thousand, two hundred fifty-seven".