725735131280 has 80 divisors (see below), whose sum is σ = 1864267000704. Its totient is φ = 261338880000.

The previous prime is 725735131273. The next prime is 725735131291. The reversal of 725735131280 is 82131537527.

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

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, 11569346 + ... + 11631905.

Almost surely, 2^725735131280 is an apocalyptic number.

It is an amenable number.

725735131280 is an abundant number, since it is smaller than the sum of its proper divisors (1138531869424).

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

725735131280 is a wasteful number, since it uses less digits than its factorization.

725735131280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23201304 (or 23201298 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 725735131280 in words is "seven hundred twenty-five billion, seven hundred thirty-five million, one hundred thirty-one thousand, two hundred eighty".