725135386 has 4 divisors (see below), whose sum is σ = 1087703082. Its totient is φ = 362567692.

The previous prime is 725135381. The next prime is 725135407. The reversal of 725135386 is 683531527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 623750625 + 101384761 = 24975^2 + 10069^2 .

It is not an unprimeable number, because it can be changed into a prime (725135381) 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 as a sum of consecutive naturals, namely, 181283845 + ... + 181283848.

Almost surely, 2^725135386 is an apocalyptic number.

725135386 is a deficient number, since it is larger than the sum of its proper divisors (362567696).

725135386 is a wasteful number, since it uses less digits than its factorization.

725135386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362567695.

The product of its digits is 151200, while the sum is 40.

The square root of 725135386 is about 26928.3379732207. The cubic root of 725135386 is about 898.4068052330.

The spelling of 725135386 in words is "seven hundred twenty-five million, one hundred thirty-five thousand, three hundred eighty-six".