401181725 has 24 divisors (see below), whose sum is σ = 601979328. Its totient is φ = 258912000.

The previous prime is 401181719. The next prime is 401181731. The reversal of 401181725 is 527181104.

It is an interprime number because it is at equal distance from previous prime (401181719) and next prime (401181731).

It is not a de Polignac number, because 401181725 - 2¹⁰ = 401180701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64451 + ... + 70400.

It is an arithmetic number, because the mean of its divisors is an integer number (25082472).

Almost surely, 2^401181725 is an apocalyptic number.

It is an amenable number.

401181725 is a deficient number, since it is larger than the sum of its proper divisors (200797603).

401181725 is a wasteful number, since it uses less digits than its factorization.

401181725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134885 (or 134880 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 401181725 is about 20029.5213372662. The cubic root of 401181725 is about 737.5311717170.

The spelling of 401181725 in words is "four hundred one million, one hundred eighty-one thousand, seven hundred twenty-five".