401625013 has 2 divisors, whose sum is σ = 401625014. Its totient is φ = 401625012.

The previous prime is 401624999. The next prime is 401625023. The reversal of 401625013 is 310526104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394538769 + 7086244 = 19863^2 + 2662^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401625013 is a prime.

It is a super-2 number, since 2×401625013² = 322605302134500338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401625023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200812506 + 200812507.

It is an arithmetic number, because the mean of its divisors is an integer number (200812507).

Almost surely, 2^401625013 is an apocalyptic number.

It is an amenable number.

401625013 is a deficient number, since it is larger than the sum of its proper divisors (1).

401625013 is an equidigital number, since it uses as much as digits as its factorization.

401625013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 401625013 is about 20040.5841481729. The cubic root of 401625013 is about 737.8027181293.

The spelling of 401625013 in words is "four hundred one million, six hundred twenty-five thousand, thirteen".