401512725 has 36 divisors (see below), whose sum is σ = 750431136. Its totient is φ = 204827040.

The previous prime is 401512717. The next prime is 401512747. The reversal of 401512725 is 527215104.

It is not a de Polignac number, because 401512725 - 2³ = 401512717 is a prime.

It is a super-2 number, since 2×401512725² = 322424936673851250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33619 + ... + 43968.

Almost surely, 2^401512725 is an apocalyptic number.

401512725 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

401512725 is a deficient number, since it is larger than the sum of its proper divisors (348918411).

401512725 is a wasteful number, since it uses less digits than its factorization.

401512725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77626 (or 77618 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 401512725 is about 20037.7824371860. The cubic root of 401512725 is about 737.7339523976.

Adding to 401512725 its reverse (527215104), we get a palindrome (928727829).

The spelling of 401512725 in words is "four hundred one million, five hundred twelve thousand, seven hundred twenty-five".