801420725 has 18 divisors (see below), whose sum is σ = 1156010274. Its totient is φ = 549544800.

The previous prime is 801420707. The next prime is 801420731. The reversal of 801420725 is 527024108.

It can be written as a sum of positive squares in 3 ways, for example, as 4036081 + 797384644 = 2009^2 + 28238^2 .

It is not a de Polignac number, because 801420725 - 2¹⁶ = 801355189 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 17 ways as a sum of consecutive naturals, for example, 325886 + ... + 328335.

It is an arithmetic number, because the mean of its divisors is an integer number (64222793).

Almost surely, 2^801420725 is an apocalyptic number.

It is an amenable number.

801420725 is a deficient number, since it is larger than the sum of its proper divisors (354589549).

801420725 is a wasteful number, since it uses less digits than its factorization.

801420725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654245 (or 654233 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 801420725 is about 28309.3752138757. The cubic root of 801420725 is about 928.8669768435.

The spelling of 801420725 in words is "eight hundred one million, four hundred twenty thousand, seven hundred twenty-five".