725405571005 has 8 divisors (see below), whose sum is σ = 891718068024. Its totient is φ = 566170201600.

The previous prime is 725405570999. The next prime is 725405571097. The reversal of 725405571005 is 500175504527.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 58017875161 + 667387695844 = 240869^2 + 816938^2 .

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

It is not a de Polignac number, because 725405571005 - 2⁶ = 725405570941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

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 7 ways as a sum of consecutive naturals, for example, 1769281676 + ... + 1769282085.

It is an arithmetic number, because the mean of its divisors is an integer number (111464758503).

Almost surely, 2^725405571005 is an apocalyptic number.

It is an amenable number.

725405571005 is a deficient number, since it is larger than the sum of its proper divisors (166312497019).

725405571005 is a wasteful number, since it uses less digits than its factorization.

725405571005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3538563807.

The product of its (nonzero) digits is 245000, while the sum is 41.

The spelling of 725405571005 in words is "seven hundred twenty-five billion, four hundred five million, five hundred seventy-one thousand, five".