72125077 has 4 divisors (see below), whose sum is σ = 72339436. Its totient is φ = 71910720.

The previous prime is 72125069. The next prime is 72125143. The reversal of 72125077 is 77052127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77052127 = 283 ⋅272269.

It can be written as a sum of positive squares in 2 ways, for example, as 15062161 + 57062916 = 3881^2 + 7554^2 .

It is a cyclic number.

It is not a de Polignac number, because 72125077 - 2³ = 72125069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72125017) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 106674 + ... + 107347.

It is an arithmetic number, because the mean of its divisors is an integer number (18084859).

Almost surely, 2^72125077 is an apocalyptic number.

It is an amenable number.

72125077 is a deficient number, since it is larger than the sum of its proper divisors (214359).

72125077 is a wasteful number, since it uses less digits than its factorization.

72125077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214358.

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 72125077 is about 8492.6484090653. The cubic root of 72125077 is about 416.2575239947.

The spelling of 72125077 in words is "seventy-two million, one hundred twenty-five thousand, seventy-seven".