3725731 has 2 divisors, whose sum is σ = 3725732. Its totient is φ = 3725730.

The previous prime is 3725713. The next prime is 3725753. The reversal of 3725731 is 1375273.

Together with previous prime (3725713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3725731 - 2⁵ = 3725699 is a prime.

It is a super-2 number, since 2×3725731² = 27762142968722, which contains 22 as substring.

It is an Ulam number.

3725731 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3725731.

It is not a weakly prime, because it can be changed into another prime (3725231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1862865 + 1862866.

It is an arithmetic number, because the mean of its divisors is an integer number (1862866).

Almost surely, 2^3725731 is an apocalyptic number.

3725731 is a deficient number, since it is larger than the sum of its proper divisors (1).

3725731 is an equidigital number, since it uses as much as digits as its factorization.

3725731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4410, while the sum is 28.

The square root of 3725731 is about 1930.2152729683. The cubic root of 3725731 is about 155.0257466769.

The spelling of 3725731 in words is "three million, seven hundred twenty-five thousand, seven hundred thirty-one".