71225194 has 4 divisors (see below), whose sum is σ = 106837794. Its totient is φ = 35612596.

The previous prime is 71225191. The next prime is 71225207. The reversal of 71225194 is 49152217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49152217 = 467 ⋅105251.

It can be written as a sum of positive squares in only one way, i.e., 49182169 + 22043025 = 7013^2 + 4695^2 .

It is not an unprimeable number, because it can be changed into a prime (71225191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17806297 + ... + 17806300.

Almost surely, 2^71225194 is an apocalyptic number.

71225194 is a deficient number, since it is larger than the sum of its proper divisors (35612600).

71225194 is a wasteful number, since it uses less digits than its factorization.

71225194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35612599.

The product of its digits is 5040, while the sum is 31.

The square root of 71225194 is about 8439.5019995258. The cubic root of 71225194 is about 414.5191003764.

The spelling of 71225194 in words is "seventy-one million, two hundred twenty-five thousand, one hundred ninety-four".