725663070 has 128 divisors (see below), whose sum is σ = 2140577280. Its totient is φ = 173456640.

The previous prime is 725663069. The next prime is 725663077. The reversal of 725663070 is 70366527.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725663077) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 215137 + ... + 218483.

It is an arithmetic number, because the mean of its divisors is an integer number (16723260).

Almost surely, 2^725663070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725663070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1070288640).

725663070 is an abundant number, since it is smaller than the sum of its proper divisors (1414914210).

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

725663070 is a wasteful number, since it uses less digits than its factorization.

725663070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447 (or 3441 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 725663070 is about 26938.1341224666. The cubic root of 725663070 is about 898.6246771673.

The spelling of 725663070 in words is "seven hundred twenty-five million, six hundred sixty-three thousand, seventy".