725420370 has 32 divisors (see below), whose sum is σ = 1747500480. Its totient is φ = 192724160.

The previous prime is 725420329. The next prime is 725420387. The reversal of 725420370 is 73024527.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 36876 + ... + 53015.

It is an arithmetic number, because the mean of its divisors is an integer number (54609390).

Almost surely, 2^725420370 is an apocalyptic number.

725420370 is an abundant number, since it is smaller than the sum of its proper divisors (1022080110).

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

725420370 is a wasteful number, since it uses less digits than its factorization.

725420370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90170.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 725420370 is about 26933.6289794005. The cubic root of 725420370 is about 898.5244835022.

Adding to 725420370 its reverse (73024527), we get a palindrome (798444897).

The spelling of 725420370 in words is "seven hundred twenty-five million, four hundred twenty thousand, three hundred seventy".