72070625 has 30 divisors (see below), whose sum is σ = 99094842. Its totient is φ = 52360000.

The previous prime is 72070601. The next prime is 72070657. The reversal of 72070625 is 52607027.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 31225744 + 40844881 = 5588^2 + 6391^2 .

It is a de Polignac number, because none of the positive numbers 2^k-72070625 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 75149 + ... + 76101.

Almost surely, 2^72070625 is an apocalyptic number.

It is an amenable number.

72070625 is a deficient number, since it is larger than the sum of its proper divisors (27024217).

72070625 is an equidigital number, since it uses as much as digits as its factorization.

72070625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 969 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 72070625 is about 8489.4419722382. The cubic root of 72070625 is about 416.1527441592.

The spelling of 72070625 in words is "seventy-two million, seventy thousand, six hundred twenty-five".