725437830 has 32 divisors (see below), whose sum is σ = 1874978784. Its totient is φ = 178569216.

The previous prime is 725437829. The next prime is 725437831. The reversal of 725437830 is 38734527.

It is an interprime number because it is at equal distance from previous prime (725437829) and next prime (725437831).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725437831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 929659 + ... + 930438.

It is an arithmetic number, because the mean of its divisors is an integer number (58593087).

Almost surely, 2^725437830 is an apocalyptic number.

725437830 is an abundant number, since it is smaller than the sum of its proper divisors (1149540954).

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

725437830 is a wasteful number, since it uses less digits than its factorization.

725437830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860120.

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 725437830 is about 26933.9531075555. The cubic root of 725437830 is about 898.5316922473.

The spelling of 725437830 in words is "seven hundred twenty-five million, four hundred thirty-seven thousand, eight hundred thirty".