140225647 has 4 divisors (see below), whose sum is σ = 140415120. Its totient is φ = 140036176.

The previous prime is 140225633. The next prime is 140225677. The reversal of 140225647 is 746522041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746522041 = 1291 ⋅578251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140225647 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 (140225677) 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, 93622 + ... + 95107.

It is an arithmetic number, because the mean of its divisors is an integer number (35103780).

Almost surely, 2^140225647 is an apocalyptic number.

140225647 is a deficient number, since it is larger than the sum of its proper divisors (189473).

140225647 is an equidigital number, since it uses as much as digits as its factorization.

140225647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189472.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 140225647 is about 11841.6910532238. The cubic root of 140225647 is about 519.5282296599.

Adding to 140225647 its reverse (746522041), we get a palindrome (886747688).

The spelling of 140225647 in words is "one hundred forty million, two hundred twenty-five thousand, six hundred forty-seven".