725554140 has 96 divisors (see below), whose sum is σ = 2158464000. Its totient is φ = 181585152.

The previous prime is 725554117. The next prime is 725554147. The reversal of 725554140 is 41455527.

It is a super-2 number, since 2×725554140² = 1052857620142279200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725554147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121341 + ... + 127179.

It is an arithmetic number, because the mean of its divisors is an integer number (22484000).

Almost surely, 2^725554140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725554140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079232000).

725554140 is an abundant number, since it is smaller than the sum of its proper divisors (1432909860).

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

725554140 is a wasteful number, since it uses less digits than its factorization.

725554140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5979 (or 5977 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 725554140 is about 26936.1121916285. The cubic root of 725554140 is about 898.5797104380.

The spelling of 725554140 in words is "seven hundred twenty-five million, five hundred fifty-four thousand, one hundred forty".