25001651 has 2 divisors, whose sum is σ = 25001652. Its totient is φ = 25001650.

The previous prime is 25001633. The next prime is 25001659. The reversal of 25001651 is 15610052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25001651 - 2¹⁰ = 25000627 is a prime.

It is not a weakly prime, because it can be changed into another prime (25001659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12500825 + 12500826.

It is an arithmetic number, because the mean of its divisors is an integer number (12500826).

Almost surely, 2^25001651 is an apocalyptic number.

25001651 is a deficient number, since it is larger than the sum of its proper divisors (1).

25001651 is an equidigital number, since it uses as much as digits as its factorization.

25001651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 25001651 is about 5000.1650972743. The cubic root of 25001651 is about 292.4082104173.

It can be divided in two parts, 25001 and 651, that added together give a palindrome (25652).

The spelling of 25001651 in words is "twenty-five million, one thousand, six hundred fifty-one".