40525957 has 2 divisors, whose sum is σ = 40525958. Its totient is φ = 40525956.

The previous prime is 40525949. The next prime is 40525967. The reversal of 40525957 is 75952504.

It is a Cunningham number, because it is equal to 6366²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40525956 + 1 = 6366^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 40525957 - 2³ = 40525949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40525937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20262978 + 20262979.

It is an arithmetic number, because the mean of its divisors is an integer number (20262979).

Almost surely, 2^40525957 is an apocalyptic number.

It is an amenable number.

40525957 is a deficient number, since it is larger than the sum of its proper divisors (1).

40525957 is an equidigital number, since it uses as much as digits as its factorization.

40525957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 40525957 is about 6366.0000785423. Note that the first 4 decimals coincide. The cubic root of 40525957 is about 343.4876233881.

It can be divided in two parts, 405 and 25957, that added together give a palindrome (26362).

The spelling of 40525957 in words is "forty million, five hundred twenty-five thousand, nine hundred fifty-seven".