40520425424 has 10 divisors (see below), whose sum is σ = 78508324290. Its totient is φ = 20260212704.

The previous prime is 40520425403. The next prime is 40520425453. The reversal of 40520425424 is 42452402504.

It can be written as a sum of positive squares in only one way, i.e., 25077889600 + 15442535824 = 158360^2 + 124268^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1266263279 + ... + 1266263310.

It is an arithmetic number, because the mean of its divisors is an integer number (7850832429).

Almost surely, 2^40520425424 is an apocalyptic number.

It is an amenable number.

40520425424 is a deficient number, since it is larger than the sum of its proper divisors (37987898866).

40520425424 is a wasteful number, since it uses less digits than its factorization.

40520425424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532526597 (or 2532526591 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 32.

Adding to 40520425424 its reverse (42452402504), we get a palindrome (82972827928).

The spelling of 40520425424 in words is "forty billion, five hundred twenty million, four hundred twenty-five thousand, four hundred twenty-four".