745661925 has 72 divisors (see below), whose sum is σ = 1404232544. Its totient is φ = 377758080.

The previous prime is 745661857. The next prime is 745661947. The reversal of 745661925 is 529166547.

745661925 is a `hidden beast` number, since 7 + 4 + 5 + 6 + 619 + 25 = 666.

745661925 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 745661925 - 2⁷ = 745661797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 356934 + ... + 359016.

Almost surely, 2^745661925 is an apocalyptic number.

745661925 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

745661925 is a deficient number, since it is larger than the sum of its proper divisors (658570619).

745661925 is a wasteful number, since it uses less digits than its factorization.

745661925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179 (or 2171 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 745661925 is about 27306.8109635673. The cubic root of 745661925 is about 906.8051735817.

The spelling of 745661925 in words is "seven hundred forty-five million, six hundred sixty-one thousand, nine hundred twenty-five".