40625000 has 72 divisors (see below), whose sum is σ = 102539010. Its totient is φ = 15000000.

The previous prime is 40624943. The next prime is 40625017. The reversal of 40625000 is 52604.

It can be written as a sum of positive squares in 9 ways, for example, as 35307364 + 5317636 = 5942^2 + 2306^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40625000.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3124994 + ... + 3125006.

Almost surely, 2^40625000 is an apocalyptic number.

40625000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40625000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51269505).

40625000 is an abundant number, since it is smaller than the sum of its proper divisors (61914010).

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

40625000 is an frugal number, since it uses more digits than its factorization.

40625000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40625000 is about 6373.7743919910. The cubic root of 40625000 is about 343.7672167685.

Adding to 40625000 its reverse (52604), we get a palindrome (40677604).

It can be divided in two parts, 40 and 625000, that multiplied together give a square (25000000 = 5000²).

The spelling of 40625000 in words is "forty million, six hundred twenty-five thousand".