25493747 has 2 divisors, whose sum is σ = 25493748. Its totient is φ = 25493746.

The previous prime is 25493731. The next prime is 25493753. The reversal of 25493747 is 74739452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25493747 - 2⁴ = 25493731 is a prime.

It is a super-2 number, since 2×25493747² = 1299862272200018, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25493707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12746873 + 12746874.

It is an arithmetic number, because the mean of its divisors is an integer number (12746874).

Almost surely, 2^25493747 is an apocalyptic number.

25493747 is a deficient number, since it is larger than the sum of its proper divisors (1).

25493747 is an equidigital number, since it uses as much as digits as its factorization.

25493747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 41.

The square root of 25493747 is about 5049.1332919621. The cubic root of 25493747 is about 294.3142050907.

The spelling of 25493747 in words is "twenty-five million, four hundred ninety-three thousand, seven hundred forty-seven".