25134731 has 2 divisors, whose sum is σ = 25134732. Its totient is φ = 25134730.

The previous prime is 25134727. The next prime is 25134743. The reversal of 25134731 is 13743152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25134731 - 2² = 25134727 is a prime.

It is a super-2 number, since 2×25134731² = 1263509404884722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25134731.

It is not a weakly prime, because it can be changed into another prime (25134751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12567365 + 12567366.

It is an arithmetic number, because the mean of its divisors is an integer number (12567366).

Almost surely, 2^25134731 is an apocalyptic number.

25134731 is a deficient number, since it is larger than the sum of its proper divisors (1).

25134731 is an equidigital number, since it uses as much as digits as its factorization.

25134731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 25134731 is about 5013.4549963074. The cubic root of 25134731 is about 292.9261074715.

Adding to 25134731 its reverse (13743152), we get a palindrome (38877883).

The spelling of 25134731 in words is "twenty-five million, one hundred thirty-four thousand, seven hundred thirty-one".