140021631525 has 24 divisors (see below), whose sum is σ = 231615448480. Its totient is φ = 74641746240.

The previous prime is 140021631467. The next prime is 140021631557. The reversal of 140021631525 is 525136120041.

It is not a de Polignac number, because 140021631525 - 2¹⁰ = 140021630501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140021631492 and 140021631501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 300715 + ... + 608664.

Almost surely, 2^140021631525 is an apocalyptic number.

140021631525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140021631525 is a deficient number, since it is larger than the sum of its proper divisors (91593816955).

140021631525 is a wasteful number, since it uses less digits than its factorization.

140021631525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911445 (or 911440 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 140021631525 its reverse (525136120041), we get a palindrome (665157751566).

The spelling of 140021631525 in words is "one hundred forty billion, twenty-one million, six hundred thirty-one thousand, five hundred twenty-five".