625164401 has 8 divisors (see below), whose sum is σ = 640041600. Its totient is φ = 610302672.

The previous prime is 625164373. The next prime is 625164427. The reversal of 625164401 is 104461526.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 625164401 - 2¹⁰ = 625163377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (625164451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141575 + ... + 145923.

It is an arithmetic number, because the mean of its divisors is an integer number (80005200).

Almost surely, 2^625164401 is an apocalyptic number.

It is an amenable number.

625164401 is a deficient number, since it is larger than the sum of its proper divisors (14877199).

625164401 is a wasteful number, since it uses less digits than its factorization.

625164401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7735.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 625164401 is about 25003.2878038069. The cubic root of 625164401 is about 855.0629325678.

The spelling of 625164401 in words is "six hundred twenty-five million, one hundred sixty-four thousand, four hundred one".