74891225 has 12 divisors (see below), whose sum is σ = 94389420. Its totient is φ = 58929600.

The previous prime is 74891213. The next prime is 74891231. The reversal of 74891225 is 52219847.

It can be written as a sum of positive squares in 6 ways, for example, as 26296384 + 48594841 = 5128^2 + 6971^2 .

It is not a de Polignac number, because 74891225 - 2⁴ = 74891209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23030 + ... + 26079.

It is an arithmetic number, because the mean of its divisors is an integer number (7865785).

Almost surely, 2^74891225 is an apocalyptic number.

It is an amenable number.

74891225 is a deficient number, since it is larger than the sum of its proper divisors (19498195).

74891225 is a wasteful number, since it uses less digits than its factorization.

74891225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49180 (or 49175 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 74891225 is about 8653.9716315689. The cubic root of 74891225 is about 421.5123575903.

The spelling of 74891225 in words is "seventy-four million, eight hundred ninety-one thousand, two hundred twenty-five".