725951639492 has 6 divisors (see below), whose sum is σ = 1270415369118. Its totient is φ = 362975819744.

The previous prime is 725951639453. The next prime is 725951639531. The reversal of 725951639492 is 294936159527.

It is an interprime number because it is at equal distance from previous prime (725951639453) and next prime (725951639531).

It can be written as a sum of positive squares in only one way, i.e., 462378240256 + 263573399236 = 679984^2 + 513394^2 .

It is a super-2 number, since 2×725951639492² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90743954933 + ... + 90743954940.

It is an arithmetic number, because the mean of its divisors is an integer number (211735894853).

Almost surely, 2^725951639492 is an apocalyptic number.

It is an amenable number.

725951639492 is a deficient number, since it is larger than the sum of its proper divisors (544463729626).

725951639492 is a wasteful number, since it uses less digits than its factorization.

725951639492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181487909877 (or 181487909875 counting only the distinct ones).

The product of its digits is 36741600, while the sum is 62.

The spelling of 725951639492 in words is "seven hundred twenty-five billion, nine hundred fifty-one million, six hundred thirty-nine thousand, four hundred ninety-two".