725371272 has 24 divisors (see below), whose sum is σ = 1964547390. Its totient is φ = 241790400.

The previous prime is 725371259. The next prime is 725371277. The reversal of 725371272 is 272173527.

It can be written as a sum of positive squares in only one way, i.e., 718990596 + 6380676 = 26814^2 + 2526^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (725371277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5037229 + ... + 5037372.

Almost surely, 2^725371272 is an apocalyptic number.

725371272 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

725371272 is an abundant number, since it is smaller than the sum of its proper divisors (1239176118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725371272 is a wasteful number, since it uses less digits than its factorization.

725371272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10074613 (or 10074606 counting only the distinct ones).

The product of its digits is 41160, while the sum is 36.

The square root of 725371272 is about 26932.7175012103. The cubic root of 725371272 is about 898.5042116928.

The spelling of 725371272 in words is "seven hundred twenty-five million, three hundred seventy-one thousand, two hundred seventy-two".