401530025 has 12 divisors (see below), whose sum is σ = 536197452. Its totient is φ = 296514240.

The previous prime is 401530007. The next prime is 401530037. The reversal of 401530025 is 520035104.

It can be written as a sum of positive squares in 6 ways, for example, as 249001 + 401281024 = 499^2 + 20032^2 .

It is not a de Polignac number, because 401530025 - 2²² = 397335721 is a prime.

It is a super-2 number, since 2×401530025² = 322452721953001250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401529979 and 401530006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 617414 + ... + 618063.

It is an arithmetic number, because the mean of its divisors is an integer number (44683121).

Almost surely, 2^401530025 is an apocalyptic number.

It is an amenable number.

401530025 is a deficient number, since it is larger than the sum of its proper divisors (134667427).

401530025 is a wasteful number, since it uses less digits than its factorization.

401530025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235500 (or 1235495 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 401530025 is about 20038.2141170315. The cubic root of 401530025 is about 737.7445478394.

Adding to 401530025 its reverse (520035104), we get a palindrome (921565129).

The spelling of 401530025 in words is "four hundred one million, five hundred thirty thousand, twenty-five".