401025413 has 4 divisors (see below), whose sum is σ = 401134188. Its totient is φ = 400916640.

The previous prime is 401025403. The next prime is 401025421. The reversal of 401025413 is 314520104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 231557089 + 169468324 = 15217^2 + 13018^2 .

It is a cyclic number.

It is not a de Polignac number, because 401025413 - 2¹² = 401021317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401025403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48656 + ... + 56297.

It is an arithmetic number, because the mean of its divisors is an integer number (100283547).

Almost surely, 2^401025413 is an apocalyptic number.

It is an amenable number.

401025413 is a deficient number, since it is larger than the sum of its proper divisors (108775).

401025413 is a wasteful number, since it uses less digits than its factorization.

401025413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108774.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 401025413 is about 20025.6189167776. The cubic root of 401025413 is about 737.4353714505.

Adding to 401025413 its reverse (314520104), we get a palindrome (715545517).

The spelling of 401025413 in words is "four hundred one million, twenty-five thousand, four hundred thirteen".