25070657 has 2 divisors, whose sum is σ = 25070658. Its totient is φ = 25070656.

The previous prime is 25070653. The next prime is 25070659. The reversal of 25070657 is 75607052.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24990001 + 80656 = 4999^2 + 284^2 .

It is a cyclic number.

It is not a de Polignac number, because 25070657 - 2² = 25070653 is a prime.

Together with 25070659, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25070653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12535328 + 12535329.

It is an arithmetic number, because the mean of its divisors is an integer number (12535329).

Almost surely, 2^25070657 is an apocalyptic number.

It is an amenable number.

25070657 is a deficient number, since it is larger than the sum of its proper divisors (1).

25070657 is an equidigital number, since it uses as much as digits as its factorization.

25070657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 25070657 is about 5007.0607146309. The cubic root of 25070657 is about 292.6769844716.

It can be divided in two parts, 250 and 70657, that added together give a palindrome (70907).

The spelling of 25070657 in words is "twenty-five million, seventy thousand, six hundred fifty-seven".