40121110525 has 24 divisors (see below), whose sum is σ = 52762933224. Its totient is φ = 30159360000.

The previous prime is 40121110493. The next prime is 40121110531. The reversal of 40121110525 is 52501112104.

It can be written as a sum of positive squares in 12 ways, for example, as 11076089049 + 29045021476 = 105243^2 + 170426^2 .

It is not a de Polignac number, because 40121110525 - 2⁵ = 40121110493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40121110496 and 40121110505.

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, 183525 + ... + 337525.

It is an arithmetic number, because the mean of its divisors is an integer number (2198455551).

Almost surely, 2^40121110525 is an apocalyptic number.

It is an amenable number.

40121110525 is a deficient number, since it is larger than the sum of its proper divisors (12641822699).

40121110525 is a wasteful number, since it uses less digits than its factorization.

40121110525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154641 (or 154636 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

Adding to 40121110525 its reverse (52501112104), we get a palindrome (92622222629).

The spelling of 40121110525 in words is "forty billion, one hundred twenty-one million, one hundred ten thousand, five hundred twenty-five".