40525420 has 48 divisors (see below), whose sum is σ = 92856960. Its totient is φ = 14766336.

The previous prime is 40525417. The next prime is 40525469. The reversal of 40525420 is 2452504.

It is a junction number, because it is equal to n+sod(n) for n = 40525391 and 40525400.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19554 + ... + 21526.

It is an arithmetic number, because the mean of its divisors is an integer number (1934520).

Almost surely, 2^40525420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40525420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46428480).

40525420 is an abundant number, since it is smaller than the sum of its proper divisors (52331540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40525420 is a wasteful number, since it uses less digits than its factorization.

40525420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074 (or 2072 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 40525420 is about 6365.9579012117. The cubic root of 40525420 is about 343.4861062233.

Adding to 40525420 its reverse (2452504), we get a palindrome (42977924).

The spelling of 40525420 in words is "forty million, five hundred twenty-five thousand, four hundred twenty".