73040025 has 24 divisors (see below), whose sum is σ = 121080544. Its totient is φ = 38851200.

The previous prime is 73039987. The next prime is 73040029. The reversal of 73040025 is 52004037.

It is a happy number.

It is not a de Polignac number, because 73040025 - 2¹¹ = 73037977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73039983 and 73040010.

It is not an unprimeable number, because it can be changed into a prime (73040029) 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, 33210 + ... + 35340.

Almost surely, 2^73040025 is an apocalyptic number.

73040025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

73040025 is a deficient number, since it is larger than the sum of its proper divisors (48040519).

73040025 is a wasteful number, since it uses less digits than its factorization.

73040025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601 (or 2596 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 73040025 is about 8546.3457103022. The cubic root of 73040025 is about 418.0102883543.

It can be divided in two parts, 730 and 40025, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 73040025 in words is "seventy-three million, forty thousand, twenty-five".