25250528507 has 2 divisors, whose sum is σ = 25250528508. Its totient is φ = 25250528506.

The previous prime is 25250528473. The next prime is 25250528539. The reversal of 25250528507 is 70582505252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25250528507 - 2²⁶ = 25183419643 is a prime.

It is not a weakly prime, because it can be changed into another prime (25250528707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12625264253 + 12625264254.

It is an arithmetic number, because the mean of its divisors is an integer number (12625264254).

Almost surely, 2^25250528507 is an apocalyptic number.

25250528507 is a deficient number, since it is larger than the sum of its proper divisors (1).

25250528507 is an equidigital number, since it uses as much as digits as its factorization.

25250528507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280000, while the sum is 41.

The spelling of 25250528507 in words is "twenty-five billion, two hundred fifty million, five hundred twenty-eight thousand, five hundred seven".