232725421 has 4 divisors (see below), whose sum is σ = 234785052. Its totient is φ = 230665792.

The previous prime is 232725413. The next prime is 232725457. The reversal of 232725421 is 124527232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76825225 + 155900196 = 8765^2 + 12486^2 .

It is a cyclic number.

It is not a de Polignac number, because 232725421 - 2³ = 232725413 is a prime.

It is a super-2 number, since 2×232725421² = 108322243159254482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 232725421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232725481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029646 + ... + 1029871.

It is an arithmetic number, because the mean of its divisors is an integer number (58696263).

Almost surely, 2^232725421 is an apocalyptic number.

It is an amenable number.

232725421 is a deficient number, since it is larger than the sum of its proper divisors (2059631).

232725421 is a wasteful number, since it uses less digits than its factorization.

232725421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059630.

The product of its digits is 6720, while the sum is 28.

The square root of 232725421 is about 15255.3407369354. The cubic root of 232725421 is about 615.1031364694.

The spelling of 232725421 in words is "two hundred thirty-two million, seven hundred twenty-five thousand, four hundred twenty-one".