7425739 has 2 divisors, whose sum is σ = 7425740. Its totient is φ = 7425738.

The previous prime is 7425731. The next prime is 7425749. The reversal of 7425739 is 9375247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7425739 - 2³ = 7425731 is a prime.

It is a super-2 number, since 2×7425739² = 110283199392242, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 7³ + 4⁸ + 2 + 5 + 7⁸ + 3¹³ + 9³ .

It is a junction number, because it is equal to n+sod(n) for n = 7425698 and 7425707.

It is not a weakly prime, because it can be changed into another prime (7425731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3712869 + 3712870.

It is an arithmetic number, because the mean of its divisors is an integer number (3712870).

Almost surely, 2^7425739 is an apocalyptic number.

7425739 is a deficient number, since it is larger than the sum of its proper divisors (1).

7425739 is an equidigital number, since it uses as much as digits as its factorization.

7425739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 37.

The square root of 7425739 is about 2725.0209173509. The cubic root of 7425739 is about 195.0951891166.

The spelling of 7425739 in words is "seven million, four hundred twenty-five thousand, seven hundred thirty-nine".