72125107 has 4 divisors (see below), whose sum is σ = 72167256. Its totient is φ = 72082960.

The previous prime is 72125069. The next prime is 72125143. The reversal of 72125107 is 70152127.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72125107 - 2⁷ = 72124979 is a prime.

It is a super-2 number, since 2×72125107² = 10404062119522898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72125167) 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, 18394 + ... + 21967.

It is an arithmetic number, because the mean of its divisors is an integer number (18041814).

Almost surely, 2^72125107 is an apocalyptic number.

72125107 is a deficient number, since it is larger than the sum of its proper divisors (42149).

72125107 is a wasteful number, since it uses less digits than its factorization.

72125107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42148.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 72125107 is about 8492.6501752986. The cubic root of 72125107 is about 416.2575817080.

The spelling of 72125107 in words is "seventy-two million, one hundred twenty-five thousand, one hundred seven".