725409375 has 24 divisors (see below), whose sum is σ = 1208953872. Its totient is φ = 386880000.

The previous prime is 725409367. The next prime is 725409409. The reversal of 725409375 is 573904527.

It is not a de Polignac number, because 725409375 - 2³ = 725409367 is a prime.

It is a super-2 number, since 2×725409375² = 1052437522675781250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29314 + ... + 48063.

It is an arithmetic number, because the mean of its divisors is an integer number (50373078).

Almost surely, 2^725409375 is an apocalyptic number.

725409375 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

725409375 is a deficient number, since it is larger than the sum of its proper divisors (483544497).

725409375 is an frugal number, since it uses more digits than its factorization.

725409375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77405 (or 77385 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 42.

The square root of 725409375 is about 26933.4248657686. The cubic root of 725409375 is about 898.5199439152.

The spelling of 725409375 in words is "seven hundred twenty-five million, four hundred nine thousand, three hundred seventy-five".