25012501457 has 2 divisors, whose sum is σ = 25012501458. Its totient is φ = 25012501456.

The previous prime is 25012501453. The next prime is 25012501517. The reversal of 25012501457 is 75410521052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22987411456 + 2025090001 = 151616^2 + 45001^2 .

It is a cyclic number.

It is not a de Polignac number, because 25012501457 - 2² = 25012501453 is a prime.

It is not a weakly prime, because it can be changed into another prime (25012501453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12506250728 + 12506250729.

It is an arithmetic number, because the mean of its divisors is an integer number (12506250729).

Almost surely, 2^25012501457 is an apocalyptic number.

It is an amenable number.

25012501457 is a deficient number, since it is larger than the sum of its proper divisors (1).

25012501457 is an equidigital number, since it uses as much as digits as its factorization.

25012501457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14000, while the sum is 32.

The spelling of 25012501457 in words is "twenty-five billion, twelve million, five hundred one thousand, four hundred fifty-seven".