725045040 has 80 divisors (see below), whose sum is σ = 2497384800. Its totient is φ = 193344768.

The previous prime is 725045039. The next prime is 725045051. The reversal of 725045040 is 40540527.

725045040 is a `hidden beast` number, since 72 + 504 + 50 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 725044995 and 725045013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165675 + ... + 169994.

It is an arithmetic number, because the mean of its divisors is an integer number (31217310).

Almost surely, 2^725045040 is an apocalyptic number.

It is an amenable number.

725045040 is an abundant number, since it is smaller than the sum of its proper divisors (1772339760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725045040 is a wasteful number, since it uses less digits than its factorization.

725045040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335691 (or 335679 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 725045040 is about 26926.6603944864. The cubic root of 725045040 is about 898.3694922778.

Adding to 725045040 its reverse (40540527), we get a palindrome (765585567).

The spelling of 725045040 in words is "seven hundred twenty-five million, forty-five thousand, forty".