25245739 has 2 divisors, whose sum is σ = 25245740. Its totient is φ = 25245738.

The previous prime is 25245719. The next prime is 25245761. The reversal of 25245739 is 93754252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25245739 - 2⁷ = 25245611 is a prime.

It is a super-2 number, since 2×25245739² = 1274694675312242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25245698 and 25245707.

It is not a weakly prime, because it can be changed into another prime (25245719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12622869 + 12622870.

It is an arithmetic number, because the mean of its divisors is an integer number (12622870).

Almost surely, 2^25245739 is an apocalyptic number.

25245739 is a deficient number, since it is larger than the sum of its proper divisors (1).

25245739 is an equidigital number, since it uses as much as digits as its factorization.

25245739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 25245739 is about 5024.5138073250. The cubic root of 25245739 is about 293.3567120083.

The spelling of 25245739 in words is "twenty-five million, two hundred forty-five thousand, seven hundred thirty-nine".