401040925 has 6 divisors (see below), whose sum is σ = 497290778. Its totient is φ = 320832720.

The previous prime is 401040889. The next prime is 401040947. The reversal of 401040925 is 529040104.

It can be written as a sum of positive squares in 3 ways, for example, as 93354244 + 307686681 = 9662^2 + 17541^2 .

It is not a de Polignac number, because 401040925 - 2²³ = 392652317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 16041637 = 401040925 / (4 + 0 + 1 + 0 + 4 + 0 + 9 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401040925.

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, 8020794 + ... + 8020843.

Almost surely, 2^401040925 is an apocalyptic number.

It is an amenable number.

401040925 is a deficient number, since it is larger than the sum of its proper divisors (96249853).

401040925 is a wasteful number, since it uses less digits than its factorization.

401040925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16041647 (or 16041642 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 401040925 is about 20026.0062169170. The cubic root of 401040925 is about 737.4448795345. Note that the first 3 decimals are identical.

The spelling of 401040925 in words is "four hundred one million, forty thousand, nine hundred twenty-five".