40553725 has 6 divisors (see below), whose sum is σ = 50286650. Its totient is φ = 32442960.

The previous prime is 40553719. The next prime is 40553731. The reversal of 40553725 is 52735504.

It is an interprime number because it is at equal distance from previous prime (40553719) and next prime (40553731).

It can be written as a sum of positive squares in 3 ways, for example, as 4481689 + 36072036 = 2117^2 + 6006^2 .

It is not a de Polignac number, because 40553725 - 2¹⁷ = 40422653 is a prime.

It is a super-2 number, since 2×40553725² = 3289209222751250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 811050 + ... + 811099.

Almost surely, 2^40553725 is an apocalyptic number.

It is an amenable number.

40553725 is a deficient number, since it is larger than the sum of its proper divisors (9732925).

40553725 is a wasteful number, since it uses less digits than its factorization.

40553725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622159 (or 1622154 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 40553725 is about 6368.1806664070. The cubic root of 40553725 is about 343.5660569602.

The spelling of 40553725 in words is "forty million, five hundred fifty-three thousand, seven hundred twenty-five".