74225745 has 48 divisors (see below), whose sum is σ = 141702912. Its totient is φ = 35642880.

The previous prime is 74225719. The next prime is 74225771. The reversal of 74225745 is 54752247.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74225719) and next prime (74225771).

It is not a de Polignac number, because 74225745 - 2⁵ = 74225713 is a prime.

It is a super-2 number, since 2×74225745² = 11018922441610050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55272 + ... + 56598.

It is an arithmetic number, because the mean of its divisors is an integer number (2952144).

Almost surely, 2^74225745 is an apocalyptic number.

It is an amenable number.

74225745 is a deficient number, since it is larger than the sum of its proper divisors (67477167).

74225745 is a wasteful number, since it uses less digits than its factorization.

74225745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462 (or 1459 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 74225745 is about 8615.4364370007. The cubic root of 74225745 is about 420.2601279715.

Adding to 74225745 its product of digits (78400), we get a triangular number (74304145 = T₁₂₁₉₀).

The spelling of 74225745 in words is "seventy-four million, two hundred twenty-five thousand, seven hundred forty-five".