25140851 has 2 divisors, whose sum is σ = 25140852. Its totient is φ = 25140850.

The previous prime is 25140847. The next prime is 25140859. The reversal of 25140851 is 15804152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25140851 - 2² = 25140847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25140851.

It is not a weakly prime, because it can be changed into another prime (25140859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12570425 + 12570426.

It is an arithmetic number, because the mean of its divisors is an integer number (12570426).

Almost surely, 2^25140851 is an apocalyptic number.

25140851 is a deficient number, since it is larger than the sum of its proper divisors (1).

25140851 is an equidigital number, since it uses as much as digits as its factorization.

25140851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 25140851 is about 5014.0653166867. The cubic root of 25140851 is about 292.9498801853.

The spelling of 25140851 in words is "twenty-five million, one hundred forty thousand, eight hundred fifty-one".