225131036370731 has 32 divisors (see below), whose sum is σ = 243364682373120. Its totient is φ = 207562058323200.

The previous prime is 225131036370697. The next prime is 225131036370733. The reversal of 225131036370731 is 137073630131522.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225131036370731 is a prime.

It is a super-2 number, since 2×225131036370731² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225131036370733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1137230900 + ... + 1137428846.

It is an arithmetic number, because the mean of its divisors is an integer number (7605146324160).

Almost surely, 2^{225131036370731} is an apocalyptic number.

225131036370731 is a deficient number, since it is larger than the sum of its proper divisors (18233646002389).

225131036370731 is a wasteful number, since it uses less digits than its factorization.

225131036370731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201635.

The product of its (nonzero) digits is 476280, while the sum is 44.

The spelling of 225131036370731 in words is "two hundred twenty-five trillion, one hundred thirty-one billion, thirty-six million, three hundred seventy thousand, seven hundred thirty-one".