747312225 has 24 divisors (see below), whose sum is σ = 1347880992. Its totient is φ = 362332800.

The previous prime is 747312187. The next prime is 747312229. The reversal of 747312225 is 522213747.

It is not a de Polignac number, because 747312225 - 2⁸ = 747311969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (747312229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 452092 + ... + 453741.

It is an arithmetic number, because the mean of its divisors is an integer number (56161708).

Almost surely, 2^747312225 is an apocalyptic number.

747312225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

747312225 is a deficient number, since it is larger than the sum of its proper divisors (600568767).

747312225 is a wasteful number, since it uses less digits than its factorization.

747312225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905857 (or 905852 counting only the distinct ones).

The product of its digits is 23520, while the sum is 33.

The square root of 747312225 is about 27337.0119983878. The cubic root of 747312225 is about 907.4736614778.

The spelling of 747312225 in words is "seven hundred forty-seven million, three hundred twelve thousand, two hundred twenty-five".