25213651 has 2 divisors, whose sum is σ = 25213652. Its totient is φ = 25213650.

The previous prime is 25213649. The next prime is 25213697. The reversal of 25213651 is 15631252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25213651 - 2¹ = 25213649 is a prime.

Together with 25213649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25213621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606825 + 12606826.

It is an arithmetic number, because the mean of its divisors is an integer number (12606826).

Almost surely, 2^25213651 is an apocalyptic number.

25213651 is a deficient number, since it is larger than the sum of its proper divisors (1).

25213651 is an equidigital number, since it uses as much as digits as its factorization.

25213651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 25.

The square root of 25213651 is about 5021.3196472641. The cubic root of 25213651 is about 293.2323712744.

The spelling of 25213651 in words is "twenty-five million, two hundred thirteen thousand, six hundred fifty-one".