73981425 has 72 divisors (see below), whose sum is σ = 146053152. Its totient is φ = 32928000.

The previous prime is 73981423. The next prime is 73981451. The reversal of 73981425 is 52418937.

It is not a de Polignac number, because 73981425 - 2¹ = 73981423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73981423) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 150430 + ... + 150920.

It is an arithmetic number, because the mean of its divisors is an integer number (2028516).

Almost surely, 2^73981425 is an apocalyptic number.

73981425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

73981425 is a deficient number, since it is larger than the sum of its proper divisors (72071727).

73981425 is a wasteful number, since it uses less digits than its factorization.

73981425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 547 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 73981425 is about 8601.2455493376. The cubic root of 73981425 is about 419.7985144684.

The spelling of 73981425 in words is "seventy-three million, nine hundred eighty-one thousand, four hundred twenty-five".