72925969 has 4 divisors (see below), whose sum is σ = 72962596. Its totient is φ = 72889344.

The previous prime is 72925961. The next prime is 72925973. The reversal of 72925969 is 96952927.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25150225 + 47775744 = 5015^2 + 6912^2 .

It is a cyclic number.

It is not a de Polignac number, because 72925969 - 2³ = 72925961 is a prime.

It is a super-2 number, since 2×72925969² = 10636393909177922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72925961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15144 + ... + 19369.

It is an arithmetic number, because the mean of its divisors is an integer number (18240649).

Almost surely, 2^72925969 is an apocalyptic number.

It is an amenable number.

72925969 is a deficient number, since it is larger than the sum of its proper divisors (36627).

72925969 is a wasteful number, since it uses less digits than its factorization.

72925969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36626.

The product of its digits is 612360, while the sum is 49.

The square root of 72925969 is about 8539.6703097953. The cubic root of 72925969 is about 417.7925930129.

The spelling of 72925969 in words is "seventy-two million, nine hundred twenty-five thousand, nine hundred sixty-nine".