725225437 has 4 divisors (see below), whose sum is σ = 727119360. Its totient is φ = 723331516.

The previous prime is 725225429. The next prime is 725225441. The reversal of 725225437 is 734522527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 725225437 - 2³ = 725225429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 725225396 and 725225405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725225407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946387 + ... + 947152.

It is an arithmetic number, because the mean of its divisors is an integer number (181779840).

Almost surely, 2^725225437 is an apocalyptic number.

It is an amenable number.

725225437 is a deficient number, since it is larger than the sum of its proper divisors (1893923).

725225437 is a wasteful number, since it uses less digits than its factorization.

725225437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893922.

The product of its digits is 117600, while the sum is 37.

The square root of 725225437 is about 26930.0099702915. The cubic root of 725225437 is about 898.4439932690.

The spelling of 725225437 in words is "seven hundred twenty-five million, two hundred twenty-five thousand, four hundred thirty-seven".