73125025 has 6 divisors (see below), whose sum is σ = 90675062. Its totient is φ = 58500000.

The previous prime is 73125023. The next prime is 73125029. The reversal of 73125025 is 52052137.

It can be written as a sum of positive squares in 3 ways, for example, as 3519376 + 69605649 = 1876^2 + 8343^2 .

It is not a de Polignac number, because 73125025 - 2¹ = 73125023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 2925001 = 73125025 / (7 + 3 + 1 + 2 + 5 + 0 + 2 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73125023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1462476 + ... + 1462525.

Almost surely, 2^73125025 is an apocalyptic number.

It is an amenable number.

73125025 is a deficient number, since it is larger than the sum of its proper divisors (17550037).

73125025 is a wasteful number, since it uses less digits than its factorization.

73125025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925011 (or 2925006 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 73125025 is about 8551.3171500068. The cubic root of 73125025 is about 418.1723780234.

The spelling of 73125025 in words is "seventy-three million, one hundred twenty-five thousand, twenty-five".