725521767612 has 24 divisors (see below), whose sum is σ = 1792465544016. Its totient is φ = 227614672128.

The previous prime is 725521767611. The next prime is 725521767613. The reversal of 725521767612 is 216767125527.

It is an interprime number because it is at equal distance from previous prime (725521767611) and next prime (725521767613).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725521767611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1778239423 + ... + 1778239830.

It is an arithmetic number, because the mean of its divisors is an integer number (74686064334).

Almost surely, 2^725521767612 is an apocalyptic number.

It is an amenable number.

725521767612 is an abundant number, since it is smaller than the sum of its proper divisors (1066943776404).

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

725521767612 is a wasteful number, since it uses less digits than its factorization.

725521767612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556479277 (or 3556479275 counting only the distinct ones).

The product of its digits is 2469600, while the sum is 51.

The spelling of 725521767612 in words is "seven hundred twenty-five billion, five hundred twenty-one million, seven hundred sixty-seven thousand, six hundred twelve".