1625320137231 has 36 divisors (see below), whose sum is σ = 2734235758800. Its totient is φ = 927647175168.

The previous prime is 1625320137031. The next prime is 1625320137253. The reversal of 1625320137231 is 1327310235261.

1625320137231 is a `hidden beast` number, since 1 + 6 + 2 + 53 + 201 + 372 + 31 = 666.

It is not a de Polignac number, because 1625320137231 - 2¹⁰ = 1625320136207 is a prime.

It is a super-2 number, since 2×1625320137231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1625320137031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1826386 + ... + 2566383.

It is an arithmetic number, because the mean of its divisors is an integer number (75950993300).

Almost surely, 2^{1625320137231} is an apocalyptic number.

1625320137231 is a deficient number, since it is larger than the sum of its proper divisors (1108915621569).

1625320137231 is a wasteful number, since it uses less digits than its factorization.

1625320137231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393628 (or 4393618 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 1625320137231 in words is "one trillion, six hundred twenty-five billion, three hundred twenty million, one hundred thirty-seven thousand, two hundred thirty-one".