40561025 has 24 divisors (see below), whose sum is σ = 51827040. Its totient is φ = 31477760.

The previous prime is 40561007. The next prime is 40561033. The reversal of 40561025 is 52016504.

It is not a de Polignac number, because 40561025 - 2¹⁰ = 40560001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157697 + ... + 157953.

It is an arithmetic number, because the mean of its divisors is an integer number (2159460).

Almost surely, 2^40561025 is an apocalyptic number.

It is an amenable number.

40561025 is a deficient number, since it is larger than the sum of its proper divisors (11266015).

40561025 is a wasteful number, since it uses less digits than its factorization.

40561025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 40561025 is about 6368.7538027467. The cubic root of 40561025 is about 343.5866706173.

Adding to 40561025 its reverse (52016504), we get a palindrome (92577529).

The spelling of 40561025 in words is "forty million, five hundred sixty-one thousand, twenty-five".