725245257 has 32 divisors (see below), whose sum is σ = 1118661120. Its totient is φ = 413320320.

The previous prime is 725245229. The next prime is 725245271. The reversal of 725245257 is 752542527.

It is not a de Polignac number, because 725245257 - 2¹⁴ = 725228873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (725245277) 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, 81678 + ... + 90120.

It is an arithmetic number, because the mean of its divisors is an integer number (34958160).

Almost surely, 2^725245257 is an apocalyptic number.

It is an amenable number.

725245257 is a deficient number, since it is larger than the sum of its proper divisors (393415863).

725245257 is a wasteful number, since it uses less digits than its factorization.

725245257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8613.

The product of its digits is 196000, while the sum is 39.

The square root of 725245257 is about 26930.3779587291. The cubic root of 725245257 is about 898.4521778494.

The spelling of 725245257 in words is "seven hundred twenty-five million, two hundred forty-five thousand, two hundred fifty-seven".